FCC ID: QCV-BTSU1 Budderfly Thermostat

Budderfly Thermostat BTS-U1 User Manual Date: March 30, 2023 BTS-U1 User Manual Contents Introduction .................................................................................................................................................. 5 Systems Compatibility ................................................................................................................................... 5 Specifications ................................................................................................................................................ 6 Terminal Description ..................................................................................................................................... 6 Wiring Diagrams ............................................................................................................................................ 7 Getting Started .............................................................................................................................................. 9 Existing Thermostat Replacement ............................................................................................................ 9 Step 1. Power Off HVAC Equipment ..................................................................................................... 9 Step 2. Remove Existing Thermostat .................................................................................................... 9 Step 3. Install the BTS-U1 ...................................................................................................................... 9 Step 4. Connect the Wiring ................................................................................................................... 9 Step 5. Power On HVAC Equipment .................................................................................................... 10 Step 6. Setup system installation ........................................................................................................ 10 LCD Display Functions ................................................................................................................................. 10 Main Screen Operations ............................................................................................................................. 11 I. Hold Feature ............................................................................................................................... 11 II. Holiday ........................................................................................................................................ 11 III. IV. Fan Mode ................................................................................................................................ 11 Schedule .................................................................................................................................. 12 Operation of Feature Settings..................................................................................................................... 12 1. Clock Settings .............................................................................................................................. 12 2. Backlight Settings ........................................................................................................................ 13 3. 4. 5. 6. 7. Standby Screen ........................................................................................................................... 13 Screen Lock ................................................................................................................................. 13 Temperature Format................................................................................................................... 13 Temperature Limit ...................................................................................................................... 13 Switch Diff ................................................................................................................................... 14 8. Output Delay ............................................................................................................................... 14 9. Daylight Saving Time ................................................................................................................... 14 10. System Information ................................................................................................................. 14 Page - 3 -

Document Version - 1 BTS-U1 User Manual 11. Reset Factory Settings ............................................................................................................. 14 Regulatory ................................................................................................................................................... 15 Page - 4 -

Document Version - 1 Introduction BTS-U1 User Manual Budderfly thermostat is a device that regulates temperature in a heating or cooling system. It operates by measuring the current temperature and comparing it to a set temperature, called the setpoint. The thermostat has an internal temperature and humidity sensors and can also have an external temperature sensor connected to it. When the current temperature deviates from the setpoint, the thermostat sends a signal to turn on or off the heating or cooling system to bring the temperature back to the setpoint. The thermostat is powered by 24 VAC, can control 2 cooling and 3 heating stages, is smart, with the capability to connect to the internet via Wi-Fi, and can be locked with a pin, set either locally or through Budderfly apps. This allows for remote temperature control and monitoring through a Budderfly apps. The thermostat can be programmed with different setpoints for different times of the day and for 7 days, allowing for energy efficiency and comfort control. It also has manual override options for immediate temperature adjustments. Systems Compatibility The Budderfly Thermostat BTS-U1 is designed to operate with low-voltage heating and cooling systems. Do not use with line-voltage and cooling systems. The Budderfly Thermostat BTS-U1 supports multiple system types:

Gas heating (up to two stages) Oil heating (up to two stages) Electric heating (up to two stages) Traditional AC (up to two stages) Heat pump with auxiliary heat (up to three stages) Dual fuel systems Boilers Floor Heating systems Fan Coil Units Page - 5 -

Document Version - 1 BTS-U1 User Manual Specifications Input Voltage: 24VAC, 50/60 Hz Dimensions: H 96 mm x W 86 mm x D 31 mm Display Resolution: 480 x 320 Display Size: 73.4 mm Height 489 mm Width WI-FI: 802.11 b/g/n (2.4G) TOUCH Capacitive Relay Rating: 24VAC@ 1Amp maximum per relay Operating Temperature: 32 F to 150 F Operating: RH 0% -90% (non-condensing) Storage Temperature: 32 F to 150 F Temperature Sensors: Thermistor 10K NTC type 2 Control Range: 41 F to 122 F Terminal Description Designator Description R C Y/Y1 Y2 W/O.B 24 VAC Heat/Cool Supply 24 VAC Common First stage of cooling or first stage heat pump Second stage of cooling or second stage heat pump W: First stage of conventional heating or first stage auxiliary heat. O.B: Heat pump reversing valve (supports both O type and B type W2: Second stage of conventional heating or second stage of auxiliary heat for heat pump systems. Aux: Auxiliary humidifier, dehumidifier, or ventilator Fan Outside air sensor Ground Occupy input No-Connect W2/Aux G T Gnd Ocp NC Page - 6 -

Document Version - 1 BTS-U1 User Manual Wiring Diagrams As the BTS-U1 is compatible with multiple systems, the following represents the wiring diagrams for different system types configurations. NOTE: Wire colors are for reference only. Not every installation will have wires of the same color. If you are unsure of how to properly install the unit, please contact a licensed electrician or a professional HVAC installer before attempting the installation. The following table shows the maximum wire length allowed:

Wire Gauge 18 #AWG 20 #AWG 22 #AWG Acceptable Maximum Length 128ft or 38m 80ft or 24m 50 ft or 15m Page - 7 -

Document Version - 1 BTS-U1 User Manual Page - 8 -

Document Version - 1 BTS-U1 User Manual Getting Started Existing Thermostat Replacement Step 1. Power Off HVAC Equipment Before disconnecting the existing thermostat, or installing the BTS-U1, disconnect the power to the heating and air conditioning equipment. Step 2. Remove Existing Thermostat Disconnect the wires to the existing thermostat and remove it from the wall (if you are installing the BTS-U1 in the same location). Step 3. Install the BTS-U1 The ideal location for the thermostat is approximately 5 ft (1.5 m) above floor level in the main living area. Warning: Do not install the thermostat: Close to sources of heat such as incandescent lights Near supply heating/cooling sources, in direct sunlight, non-insulated or poorly insulated walls In the kitchen or other areas of potentially high heat and/or humidity In an area that could restrict air flow To install the thermostat:

1. Gently separate the backplate from the thermostat. 2. Place the thermostat backplate on the wall. Make sure that any existing wires can be inserted through the opening for the wiring. 3. Using the backplate as a template, mark the location of the mounting holes on the wall as shown below. 4. Move the backplate out of the way and make holes where indicated in step 3. The mounting holes can accommodate a #6 pan-head screw. It is recommended to use the included fasteners to ensure proper fitting of the front housing. 5. Use the included drywall plugs (or other suitable anchors) to ensure the thermostat can be mounted securely to the wall. 6. Fasten the backplate to the wall using the screws provided (or other suitable screws). Step 4. Connect the Wiring You need to use low-voltage cable to connect the thermostat to the HVAC equipment. Check the wiring diagrams on pages 10 to 19 for the number of wires required. To connect the thermostat to the equipment:

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Document Version - 1 BTS-U1 User Manual 1. Connect the wires as shown in the wiring diagrams. 2. Attach the BTS-U1 to the backplate. Ensure that the pins on the thermostat align with the terminal block on the backplate. Step 5. Power On HVAC Equipment After you've completed the wiring, you can apply power to the heating and air conditioning equipment. The EMS Si receives power from the equipment and will automatically power on. Step 6. Setup system installation Entering the Installer setup Menu 01 Press the icon on the main screen. 02 On the Feature Setting page select icon to next page 03 select 'Installation Settings'

04 On Installation Settings page press the "Re-Install" icon 05 Input the password 1234, Press the "Continue" icon 06 Select which system and settings this thermostat will work with press the "Next" key on the bottom of screen to finish all settings. LCD Display Functions 01- Wi-Fi indicator- Displayed when connected to a WiFi Network 02- History: History data, temperature and humidity trace line 03- Adjusting the optional settings. 04- Day Indicator & Clock. 05- System Mode: Heat, Cool Auto, Off. 06- Fan mode Auto, On. 07- Humidity:

(1) If humidity value less than 30%, the pointer will be in the Red area. Page - 10 -

Document Version - 1 BTS-U1 User Manual

(2) If humidity value is between 30% and 60%, the pointer will be in the Green area.

(3) If humidity value is more than 60%, the pointer will be in the Gray area. 08- Power ON/OFF. 09- Holiday: Displayed when thermostat is in holiday mode. 10- Schedule: Programmable Operation. 11- Setup Button. 12- Adjusting the Setting Temperature or Turn Page. 13- Adjusting the Setting Temperature or Turn Page. 14- Setting Temperature display. 15- Room Temperature display. 16- C or 'F Display. 17- Displayed "Heating/Cooling/Vent symbol. Main Screen Operations I. Hold Feature The Temperature Hold function allows you to manually override the current operating program and set a different temperature for a desired period. Click the Hold and entry in setting interface. Click the First column of Hold Temp, use the arrows to set the desired hold temperature.

(Temperature Range 5-35). Click the Second/Third columns of Hour/Minute, use the arrows to set the desired Hold Time Click the back icon to save and return to main display, or select Cancel to delete the setting. You will see the HOLD Left: **:** indication is displayed on screen. The time will countdown the set duration and then revert to the normal program. II. Holiday The MC6 will maintain this temperature for the duration of the holiday and will then automatically return to the program mode on your return. Click the column of Years/Month/Day,Use the arrows to set the Year/Month/Day values under Holiday Start. Click the column of Years/Month/Day,Use the arrows icons to set the Year/Month/Day values under Holiday End. Click the back icon to save and return to main display. Displayed Holiday until **/**

**:**or select Cancel to delete the setting III. Fan Mode Click the Fan on the Main Display, and change the Fan mode to Auto or High. Page - 11 -

Document Version - 1 BTS-U1 User Manual Schedule IV. Select the Schedule on the Main Display, and enter the Edit interface. On the Edit Page, from Monday to Sunday can be selected to edit. Click Monday and enter Mondays setting interface. There are Four Time Period can be selected: Morning/Day/Evening/ Night (each time period has options). In the program of Monday:Morning . Click the First Column of Time ,use the icons to set desired HourClick the Second Column of Time ,use the icons to set desired Minute. For Example:The Setting Time is 04:00am. Click the Third Column of Temperature, use the icons to set desired Temperature. For Example: The Setting Temperature is 80.6 Day . The same as Program Morning procedures. For Example: The Setting Time is 10:40 am. For Example: The Setting Temperature is 72.5 Evening . The same as Program Morning procedures. For Example: The Setting Time is 8:30 pm. For Example: The Setting Temperature is 78.8 Night . The same as Program Morning procedures. For Example: The Setting Time is 12:00 pm. For Example: The Setting Temperature is 82.4. Four Time Periods:

04:00 am-10:40 am : During this time period ,the temperature will remain at 80.6. 10:40 am-8:30 pm : During this time period ,the temperature will remain at 75.2. 8:30 pm-12:00 pm : During this time period ,the temperature will remain at 78.8. Operation of Feature Settings 1. Clock Settings To set the clock ,follow these steps. 1. Select the gear icon and enter Feature Settings. 2. Select The Clock Setting to enter Setting Interface. Page - 12 -

Document Version - 1 BTS-U1 User Manual 3. Select the column of Year/Month/Day, use the arrow icons to set the Year/Month/Day values. 4. Select the column of Time, use the arrow icons to set Hours/ Minute. 5. Select the back icon to save and return to main display. 2. Backlight Settings Click the gear icon to enter Feature Settings. Click Backlight selection and enter Backlight Setting. Choose the dimming preference between automatic and manual and use the slider to adjust to the desired brightness. Click the back icon to save and return to main display. 3. Standby Screen Click the gear icon and enter Feature Settings. Select Standby Screen and enter Setting interface. There are Four Selection (3Min, 10Min, Just Night, Never) to controls the Standby Screen Time. Click the icon back icon to save and return to main display. 4. Screen Lock Click the gear icon and enter Feature Settings. Select Screen Lock and enter setting interface. You can enable or disable using the slider. 5. Temperature Format Click the gear icon and enter Feature Settings. Select the Temp Format option to enter setting interface. There are two options:

Select the desired temperature format between C and F. . Click the back icon twice to save and return to main screen. 6. Temperature Limit Click the gear icon and enter Feature Settings. Select the Temp Limit option to enter setting interface. Click the First Column, use the arrows key icon to adjust. Minimum Temperature to 41-93.2. Click the Second Column ,use the arrows key icon to adjust. Page - 13 -

Document Version - 1 BTS-U1 User Manual Maximum Temperature to 42.8-95. Click the back icon twice to save and return to main screen. 7. Switch Diff This function allows you to increase the switching differential of the thermostat. The system defaults to 32.9, meaning that when the temperature is set to 68, the thermostat will start heating at 67.1 and stop at 68. If the default value is 33.8, start heating at 66.2, stop at 68. 8. Output Delay To prevent rapid switching, an output delay can be entered and can be set from 0-15 minutes. (The default is 00, means no delay) 9. Daylight Saving Time Click the gear icon and enter Feature Settings. Select DST then Auto DST to enter setting interface. There are three options:

European Union / US & Canada/Australia & New Zealand Select the back icon to save and return to main screen. 10. System Information Click the gear icon to enter feature settings. Select System Information to enter interface, It will show shows Version Number : Pro-3.43s. Select the back icon to Exit. 11. Reset Factory Settings Click gear icon then Reset Factory Settings and enter setting interface. Warning: Reset will make you lose the current Settings and return to the factory Settings. Page - 14 -

Document Version - 1 BTS-U1 User Manual Regulatory FCC Warning This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: This device has been tested and found to comply with the limits for a Class B digital device, according to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used following the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this device does cause harmful interference to radio or television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

i. ii. iii. iv. Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Note: The Grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance. such modifications could void the user's authority to operate the equipment. Radiation Exposure Statement This device complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This device should be installed and operated with a minimum distance of 20cm between the radiator and your body. Page - 15 -

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Qo BUDDERFLY Engineered in CT, USA Wi-Fi Smart Thermostat Manufactured in China Model#: BTS-U1 FCC ID: QCV-BTSU1 24 VAC 50-60Hz 0.1A www.Budderfly.com For Indoor Use Only ie corres

WARNING:pdfminer.pdfpage:The PDF <_io.BufferedReader name='/Volumes/Scratch/Incoming/eg-scratch/6473821.pdf'> contains a metadata field indicating that it should not allow text extraction. Ignoring this field and proceeding. Use the check_extractable if you want to raise an error in this case OTA TEST REPORT Applicant Espressif Systems Product ESP-ANT A Model ESP-ANT A Report No. YXA1711-1424OTA01R3 Issue Date November 27, 2020 TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in ANSI/IEEE Std 149-2008. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Preparedby:PengTao Approvedby:KaiXu TA Technology (Shanghai) Co., Ltd. No.145,JintangRd,TangzhenIndustryPark,PudongShanghai,China TEL:+8602150791141/2/3 FAX:+8602150791141/2/38000 OTA Test Report Report No: YXA1711-1424OTA01R3 TABLE OF CONTENTS 1. General Information ....................................................................................................................... 3 1.1. 1.2. 1.3. Notes of the Test Report ................................................................................................... 3 Testing laboratory .............................................................................................................. 3 Laboratory Environment .................................................................................................... 3 2. General Description of Equipment under Test ............................................................................... 4 2.1. Applicant Information ......................................................................................................... 4 2.2. Manufacturer Information .................................................................................................. 4 2.3. 2.4. 2.5. Information of EUT ............................................................................................................ 4 Test Date ........................................................................................................................... 4 Applied Standards ............................................................................................................. 5 3. Test Conditions .............................................................................................................................. 6 3.1. 3.2. Test Configuration ............................................................................................................. 6 Test Measurement ............................................................................................................. 6 4. Test Results ................................................................................................................................... 7 4.1. Gain and Efficiency ............................................................................................................ 7 4.2. 4.3. Voltage Standing Wave Ratio (VSWR) .............................................................................. 8 Antenna S11 ...................................................................................................................... 8 5. Test Equipment List ....................................................................................................................... 9 APPENDIX A: 2-D Pattern Plots ............................................................................................................. 10 APPENDIX B: The EUT Appearance and Test Configuration .................................................................. 11 B.1 EUT Appearance ................................................................................................................... 11 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 2 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 1. General Information 1.1. Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of TA technology

(shanghai) co., Ltd.The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein .Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. This report must not be used by the client to claim product certification, approval, or endorsement by any government agencies. 1.2. Testing laboratory Company:

TA Technology (Shanghai) Co., Ltd. Address:

No.145, Jintang Rd, Tangzhen Industry Park, Pudong City:

Shanghai Post code:

201201 Country:

P. R. China Contact:

Xu Kai Telephone:

+86-021-50791141/2/3 Fax:

+86-021-50791141/2/3-8000 Website:

http://www.ta-shanghai.com E-mail:

xukai@ta-shanghai.com 1.3. Laboratory Environment Temperature Relative humidity Shield effect Ground resistance Min. =19Max. = 25 Min. =40%Max. =72%

0.7-6GHz

> 100dB

<0.5 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 3 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 2. General Description of Equipment under Test 2.1. Applicant Information Company:

Espressif Systems Address:

#204, Block 2, 690 Bibo Road, Zhang Jiang High-Tech Park, Shanghai, P. R. China 2.2. Manufacturer Information Company:

Espressif Systems Address:

#204, Block 2, 690 Bibo Road, Zhang Jiang High-Tech Park, Shanghai, P. R. China 2.3. Information of EUT General information Product Name:

ESP-ANT A Model HW Version:

SW Version:

ESP-ANT A

EUT Description Antenna Type:

Fixed Antenna (PCB Antenna) Antenna Manufacturer:

Espressif Systems Test Frequency:

2400MHz ~ 2500MHz Test lab. of the antenna gain and radiation pattern measurement: TA Technology (Shanghai) Co., Ltd. This revised report (Report No.: YXA1711-1424OTA01R3) supersedes and replaces the previously issued report (Report No.: YXA1711-1424OTA01R2 & YXA1711-1424OTA01R1 & YXA1711-

1424OTA). Please discard or destroy the previously issued report and dispose of it accordingly. 2.4. Test Date The test is performed on August 30, 2017 and November 22, 2017. TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 4 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 2.5. Applied Standards According to the specifications of the manufacturer, it must comply with the requirements of the following standards:

Test Method: ANSI/IEEE Std 149-2008 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 5 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 3. Test Conditions 3.1. Test Configuration Great-Circle-Cut method is used to measure the antenna 3D GAIN of EUT in OTA qualified anechoic chamber. Equipment Under Test (EUT) geometry centre vertical projection at the centre of platform, the distance from EUT to measurement antenna is 5m. 3.2. Test Measurement Spherical coordinate system Figure 1 Test coordinate system Note: Theta is from 0~180 degree. Phi is from 0~360. Rotate the EUT and record the Data, the step of rotation is 30 degree. TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 6 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 4. Test Results 4.1. Gain and Efficiency Model Test Item Test State Frequency

(MHz) 2400 Efficiency

(%) 67.24 Peak Gain

(dBi) 3.08 Note ESP-ANT A Gain Free Space 2402 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 68.24 70.74 77.67 78.20 78.11 77.14 74.79 75.60 74.55 73.05 71.38 3.18 3.27 3.66 3.71 3.68 3.64 3.52 3.60 3.52 3.56 3.48 Vertical 30 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 7 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 4.2. Voltage Standing Wave Ratio (VSWR) Frequency (MHz) VSWR 2412 1.23 2437 1.12 2462 1.17 2480 1.26 4.3. Antenna S11 Frequency (MHz) S11(dB) 2412

-20.74 2437

-26.43 2462

-23.25 2480

-19.71 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 8 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 5. Test Equipment List Type of Equipment Model Number SN Manufacture Calibration Date Expiration Time Network Analyzer E5071B MY48360957 Agilent 2017-05-20 2018-05-19 Quad-Ridge Horn Antenna 700 MHz-6 GHz 3164-04 00062743 ETS 2017-05-20 2018-05-19 MAPS Controller 7006 00059957 ETS 2016-12-16 2017-12-15 Switch Control System 7001 MY42001152 ETS 2016-12-16 2017-12-15 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 9 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 APPENDIX A: 2-D Pattern Plots

) m B d

r e w o P 90 60 120 Max: 2.5 Min: -3 Scale: 0.5/div

) m B d

r e w o P 90 60 120 Max: 3 Min: -7 Scale: 1/div Cut1 0 330 30 150 180 210 Theta=90 XOY Cut2 0 330 30 150 210 180 Phi=0 XOZ Cut3 0 330 30 300 240 270 300 270 240

) m B d

r e w o P 90 60 120 300 240 270 Max: 4 Min: -12 Scale: 2/div 150 180 210 Phi=90 YOZ 2400 MHz 2402 MHz 2410 MHz 2420 MHz 2430 MHz 2440 MHz 2450 MHz 2460 MHz 2470 MHz 2480 MHz 2490 MHz 2500 MHz 2400 MHz 2402 MHz 2410 MHz 2420 MHz 2430 MHz 2440 MHz 2450 MHz 2460 MHz 2470 MHz 2480 MHz 2490 MHz 2500 MHz 2400 MHz 2402 MHz 2410 MHz 2420 MHz 2430 MHz 2440 MHz 2450 MHz 2460 MHz 2470 MHz 2480 MHz 2490 MHz 2500 MHz TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 10 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd. OTA Test Report Report No: YXA1711-1424OTA01R3 APPENDIX B: The EUT Appearance and Test Configuration B.1 EUT Appearance ESP-ANT A Picture 1 Constituents of EUT

******END******

TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 11 of 11 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofTATechnology(Shanghai)Co.,Ltd.

Budderfly INC Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 04-20-2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: QCV-BTSU1

[Budderfly INC] (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely,

(Applicant signature)

(Applicant printed name) Chris BBenedictis Rev 1/26/2023

Budderfly INC Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 04-20-2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: QCV-BTSU1

[Budderfly INC] (the applicant) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely,

(Applicant signature)

(Applicant printed name) Chris Rev 1/26/2023

Budderfly Inc

$8 UD D E R F & 2 Trap Falls Rd. Ste. 310

+ MANA@EMEN Shelton, CT 06484

(855)659-4190 www.Budderfly.com January 30", 2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: QCV-BTSU1 Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

Exhibit Type File Name Schematics 4.BTSU1_Schematic.pdf Block Diagram 5.BTSU1_Block Diagram.pdf Operational Description 6.BTSU1_Operational Description.pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. We, Budderfly INC, would like to request that the above materials submitted with the application for certification be withheld from public disclosure as per Section 0.459 of FCC Rules. This request is made under the provisions of Section 0.457 (d) of the Commissions Rules, and Section552 (b)(4) of the Freedom of Information Act. These sections authorize the withholding from public inspection, those materials which would be privileged as a matter of law if retained by the person submitting them, and materials which would not customarily be released to the public by that person. If you have any questions, please do not hesitate to contact us at (203)824-2220 or at (855)659-4190. Sincer Chris DeBenedictis Vice-President of Technology

(203)824-2220

Budderfly Inc 985 UDDERFLY Hino soohrgaa THE POWER TO MANAGE ALL YOUR ENERGY

(855)659-4190 www.Budderfly.com January 30", 2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: POWER OF ATTORNEY, FCC ID: QCV-BTSU1 To Whom It May Concern:

We, the undersigned, hereby authorize Waltek Services (ShenZhen) Co., Ltd. (Philo Zhong) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Services (ShenZhen) Co., Ltd. (Philo Zhong) on our behalf shall have the same effect as acts of our own. This authorization expires on Feb 01, 2024. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Budderfly INC, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853(a), and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely,

[f a ak Vice-President of Technology

(203)824-2220

Budderfly INC 2 Trap Falls Rd. Ste. 310, Shelton, CT 06484, USA Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 04-20-2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: QCV-BTSU1

[Budderfly INC] (the applicant) certifies that, as of the date of the filing of the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information:

FRN: 0022045272 Name: Budderfly INC Address: 2 Trap Falls Rd. Ste. 310, Shelton, CT 06484, USA Contact Person: Chris DeBenedictis Tel.: (855) 659-4190 Email: chris.debenedictis@ budderfly.com Sincerely, Budderfly INC Chris DeBenedictis a, Rev 1/26/2023