FCC ID: 2BFCS-WXS8810 Indoor Air Quality (IAQ) Ambience Monitoring Sensor

DOCUMENTATIONS CENTER PRODUCT DATASHEET LoRaWAN 3-in- I IAQ (Temperature+Humidity+CO2) Smart Sensor Terminal with WxS8813-423071 4.2" Ink Display (Indoor, ER18505H/M) Product Highlights LoRaWAN 3-in- I IAQ (Temperature+Humidity+CO2) Smart Sensor Terminal with 4.2" Ink Display (Indoor, ER18505H/M) Battery powered (ER18505M/ER18505H) Ultralow power design, batteries powered up to 10 years Temperature , humidity and CO2 (temperature: - 40 ~125 ; humidity: 0~100%

RH;CO2:0-5,000ppm) in the environment can be monitored and transmitted in real time Terminal and sensor parameters configurable with Configuration Tool running on PC o LoRaWAN ISM Global Bands Supported and SW Configurable o LoRaWAN Uplink Transmission Cycle Configurable o Sensor Parameters Configurable o Sensor Data Report Cycle Configurable FOTA (Over The Air) firmware upgrade, including to upgrade loader and application images OTA (Over The Air) terminal running parameters supported Integrated internal antenna, or optional external SMA/IPEX antenna The transmission reaches 5km in NLoS (non-line of sight) and 18km in LoS (line of sight) environment Optional (Public/Private) IoT cloud platform PolySuite iView and LoRaWAN network iServer LoRaWAN Compliance Specifications Parameters Smart Terminal Data Report Wireless ISM Regional Parameters Value MQTT Protocol, Jason format;

Cross-threshold report, plus periodic report (the threshold and the periodic report cycle are both user-configurable) AS923 (AS923-1, AS923-2, AS923-3, AS923-4) AU915 CN470 CN779 EU433 EU868 IN865 KR920 RU864 US915 Polysense Technologies Inc. Proprietary and Open Page 1 DOCUMENTATIONS CENTER PRODUCT DATASHEET Maximum Link Budget Distance Antenna Mechanical Dimension IP Grade Operating Temperature Total Weight Electrical Supply Voltage Power Type Compliance/Certification 168dB Up to 5km in NLOS; up to 18km in LOS Integrated internal antenna or external 1/2 wavelength whip antenna

(SMA) 100*86*28mm IP30

-40C to +85C 120 g 3.6VDC 2*ER18505M/H Products includes following parts:

PST-xx13-423071 3-in-1 IAQ (Temperature+Humidity+CO2) Smart Sensor Terminal with 4.2" Ink Display (Indoor, ER18505H/M) WxS88xx WxS Terminal LoRa Communications Board Configuration Tool iEdge4.0 WxS IoT Terminal products can be configured with PolySuite software-visual based Configuration Tool or CLI interface command or OTA via IoT platform, such as PolySuite PaaS platform iView. Download link http://ota.polysense.online/wincc/ConfigurationTool.rar Product Image Polysense Technologies Inc. Proprietary and Open Page 2 DOCUMENTATIONS CENTER PRODUCT DATASHEET 3-in-1 IAQ (Temperature+Humidity+CO2) Smart Sensor Terminal with 4.2" Ink PST-xx13-423071 Display (Indoor, ER18505H/M) Product introduction PST-xx13-423071 is a product with an ink screen display that integrates temperature, humidity and carbon dioxide sensors. Battery powered, it can detect carbon dioxide, temperature and humidity in the environment in real time.Mounted with screw or adhesive tape, suitable for indoor scenes. Detection principle Temperature and Humidity: Semiconductor CO2: advanced non dispersive infrared (NDIR) technology Product features Sensor parameters: ambient temperature and humidity, CO2 4.2 "ink screen, real-time display of temperature and humidity data Ultra low power design, battery powered up to 10 years Batteries: 2*ER18505 Product parameters Parameters Measuring range Temperature: - 40 125 Humidity: 0~100% RH CO2:0-5000ppm Temperature: 0 65 , 0.2 Other, 0.6 Humidity: 10~90%, 2% RH; Other, 4% RH CO2: (50ppm+5% reading) at 25 2 Temperature: 0.01 Humidity: 0.01%RH Temperature:>2s (T63%) Humidity: 86s Temperature:<0.03 /yr Humidity:<0.25% RH/yr Ink screen 4.2 100mm*86mm*28mm

- 10~50 ; Below 0~95% RH (non condensing)

- 30~60 ; Below 0~95% RH (non condensing) IP30 3.6V;

Replaceable ER18505M or ER18505H lithium battery Accuracy Resolution Response time Long term drift Display screen Mechanics Size Working conditions Storage conditions IP Grade Power Power Battery type Application It is widely used in indoor environment testing. Polysense Technologies Inc. Proprietary and Open Page 3 DOCUMENTATIONS CENTER PRODUCT DATASHEET Ordering Guide PST-xx13-423071 needs to be used together with WxS series communication boards (WxS88xx, WxS98xx and WxS99xx) to form intelligent IoT terminals with different communication modes;

Example of products are as follows:

4.2" Ink Display o WxS8813-423071 LoRaWAN Series IAQ (Temperature+Humidity+CO2) Smart Sensor Terminal with o WxS9813-423071 NB-IoT (China) Series IAQ (Temperature+Humidity+CO2) Smart Sensor Terminal o WxS9913-423071 NB-IoT (Global) Series IAQ (Temperature+Humidity+CO2) Smart Sensor Terminal with 4.2" Ink Display with 4.2" Ink Display FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with 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 equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

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. Caution Any changes or modications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. RF Exposure Information This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. Polysense Technologies Inc. Proprietary and Open Page 4

Page 1 of 1 FCC ID:2BFCS-WXS8810 LABEL AND LOCATION Indoor Air Quality (IAQ) Ambience Monitoring Sensor Model:WxS8810 FCC ID:2BFCS-WXS8810

(Size: L: 2.0cm x W: 2.5cm) Label Location Shenzhen LCS Compliance Testing Laboratory Ltd. Add: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel: +(86) 0755-82591330 | E-mail: webmaster@lcs-cert.com | Web: www.lcs-cert.com Scan code to check authenticity

Polysense Technologies Inc Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 U.S. Agent Designation 3/25/2024 Polysense Technologies Inc acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BFCS-

WXS8810 ):

Name and company of U.S. agent:

Polysense Technologies Inc Physical U.S. address of agent:

3000 Scott Blvd,Santa Clara, California,United States,95054 FRN of U.S. agent:

0035104629 Email address of U.S. agent:

operation@polysense.net Polysense Technologies Inc acknowledges their obligation to accept service of process on behalf of Polysense Technologies Inc Polysense Technologies Inc with the FRN 0035104629 accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-

related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Alina Wu Manager Signature Alina Wu Manager Polysense Technologies Inc Polysense Technologies Inc 5 0 V

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Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs 0.457 and 0.459 of the Commissions Rules (47 C.F.R.) and Section 552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products:

FCC ID 2BFCS-WXS8810 Model name WxS8810, WxS8811, WxS8812, WxS8813, WxS8814, WxS8815, WxS8816, WxS8817, WxS8818, WxS8819 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are:

the Operational Description the Block Diagram the Schematics the Part List the Tune up Procedure The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Signature Date:2024-03-26 Name / Title: Alina Wu / Manager Company: Polysense Technologies Inc Address: 3000 Scott Blvd, Santa Clara, California 95054, United States Phone: +1-347-755-4663 Fax: N/A E-Mail: operation@polysense.net

Covered Equipment Identification Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(ii) of the Commissions Rules (47 C.F.R.) we attest as follows:

We, applicant Company Name: Polysense Technologies Inc Address:

3000 Scott Blvd, Santa Clara, California 95054, United States Phone: +1-347-755-4663 certify 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. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Signature Date:2024-03-26 Name / Title: Alina Wu / Manager Company: Polysense Technologies Inc Address: 3000 Scott Blvd, Santa Clara, California 95054, United States Phone: +1-347-755-4663 Fax: N/A E-Mail: operation@polysense.net

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commissions Rules (47 C.F.R.) we attest as follows for the product listed below:

FCC ID 2BFCS-WXS8810 Model name WxS8810, WxS8811, WxS8812, WxS8813, WxS8814, WxS8815, WxS8816, WxS8817, WxS8818, WxS8819 We, applicant Company Name: Polysense Technologies Inc Address:

3000 Scott Blvd, Santa Clara, California 95054, United States Phone: +1-347-755-4663 certify 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. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Signature Date:2024-03-26 Name / Title: Alina Wu / Manager Company: Polysense Technologies Inc Address: 3000 Scott Blvd, Santa Clara, California 95054, United States Phone: +1-347-755-4663 Fax: N/A E-Mail: operation@polysense.net

Polysense Technologies Inc 3000 Scott Blvd, Santa Clara, California 95054, United States Date: March 26, 2024 FCC ID: 2BFCS-WXS8810 Model Number: WxS8810, WxS8811, WxS8812, WxS8813, WxS8814, WxS8815, WxS8816, WxS8817, WxS8818, WxS8819 To: Federal Communication Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21048 To Whom It May Concern, We, Polysense Technologies Inc hereby declare that our product (Indoor Air Quality

(IAQ) Ambience Monitoring Sensor) Model Number: WxS8810, WxS8811, WxS8812, WxS8813, WxS8814, WxS8815, WxS8816, WxS8817, WxS8818, WxS8819 board, Schematic, Hardware version, Software version, structure and internal photos are same, named differently due to marketing purposes. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely,

(Signed) Name/Title: Alina Wu / Manager Company: Polysense Technologies Inc Address: 3000 Scott Blvd, Santa Clara, California 95054, United States Tel: +1-347-755-4663 Fax: N/A E-Mail: operation@polysense.net