FCC ID: 2AK8Q-HWD01161 Wireless Doorbell

Product specification Date: 2019.06.16 Entry name: HD16 Version number: 00.00.02 1 Features 1. Non isolated buck power switch with high performance, high precision and low cost is adopted. The input voltage range is 85V AC ~ 265V AC, which is universal in the world and easy to stock. 2. Under voltage protection, over-voltage protection, over temperature protection, cycle by cycle over-current protection and short-circuit protection. Perfect protection function ensures the reliability of the system. 3. The safety tube is used at the input end to further ensure the product safety. (some peers use resistance instead of fuse) 4. It adopts high performance MCU and built-in EEPROM to save user configuration information. The peripheral circuit is simple and reliable. 5. High receiving sensitivity, general shell can reach - 110dBm 6. Transmit power up to 10dB 7. Long distance, more than 100 meters in open space 8. Modulation mode: 433.92mhz ASK 9. Thirty eight six chord tracks 10. The waiting current of transmitter is very low, less than 2uA 2.Operating instructions 1.Remote control matching Press the music + and Vol keys at the same time, and the LED lights up to enter the pairing mode. Press the remote control to be paired. If the pairing is successful, the LED at the receiving end flashes once and saves the pairing information. After 40 seconds, it will automatically exit the pairing mode. 2.Delete remote control pairing Press and hold the Vol key and all pairing information will be cleared automatically after 5 seconds. 3.Use of remote control Install the battery of the remote control, install the receiving terminal, and match it according to the above method (it has been equipped at the factory and can be used directly). Press the button on the remote control, and you will hear the music. If you are not satisfied with the music or sound, you can refer to the following method settings. 4.Set the music purpose There are 38 tracks in total. Press the music + track key once to switch to the next track, and press the track key again to return to the first track. Each time you press the music track key, you can switch to the previous song, and then press the track key again to return to the next song. 5.Setting of volume The volume is divided into 4 levels. Press the volume key to switch different volumes. 1. Electrical parameters Receiver:

Standby current Working current Working frequency Receiving sensitivity Track data working temperature working voltage Transmitter:

Standby current Working current Working frequency Transmitting power working temperature Battery type working voltage

< 60uA(220V AC)

< 5mA(220 AC) 433.92MHz GFSK

-110dBm 38

-20 ~ 85 C 85V AC~265V AC

< 2uA

< 15mA 433.92MHz GFSK

> 10dBm

-20 ~ 85 C CR2032 DC 3V 1.Test mode In order to speed up production and save cost, a test mode was designed in the design. 2.Power test Take off the battery, press the remote control and do not put it on. After the battery is installed and powered on for 2 seconds, the LED flashes three times, indicating that it enters the power test mode. At this time, the remote control has a frequency of 433.92mHz, which is often transmitted. You can view the frequency and power values through the spectrum analyzer, and press any key to exit the power test mode. 1. Update records time 2020.5.18 edition V0.1 2020.06.16 V0.2 Change content FIRST COMPILATION Modified by Meiying Bian to examine ADD SCHEMATIC DIAGRAM AND MODIFY OPERATION METHOD Hongxian Chen FCC Statement 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: 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. 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Increase the separation between the equipment and receiver.

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AK8Q-HWD01161 LABEL AND LOCATION Wireless Doorbell Model: HWD01161 FCC ID: 2AK8Q-HWD01161

(Size: L3.5m x 2.0cm) Label Location Material: silk-screen Font color: Black Label color: White _____________________________________________________________________________________________________ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.. Page 1 of 1

Shenzhen Unichain Technology Co., Ltd Agent Authorization Company: Shenzhen Unichain Technology Co., Ltd Address: 201, 2nd Floor, Building C, Shanhai Commercial Plaza Huangjunshan District, Bantian St, Longgang District, Shenzhen, China Product Name: Wireless Doorbell Trade Mark: TECKNET Model Number: HWD01161, HWD01162 FCC ID: 2AK8Q-HWD01161 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2020-10-28 Name:

Zhiying Lan Title:

Manager Company: Shenzhen Unichain Technology Co., Ltd

Shenzhen Unichain Technology Co., Ltd Date: 202010-28 To: MiCOM Labs Inc 575 Boulder Court, Pleasanton, California 94566, USA Dear Sir/Madam, We, Shenzhen Unichain Technology Co., Ltd Hereby declares the following statement for MiCOM Labs Inc, PCB board, structure and internal of these model(s) are the same, Only models name is different for these models:

Product name: Wireless Doorbell Trade Mark: TECKNET Model No.: HWD01161, HWD01162 Signature:

Date: 2020-10-28 Name:

Zhiying Lan Title:

Manager Company: Shenzhen Unichain Technology Co., Ltd

Shenzhen Unichain Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-10-28 Subject; Request for Confidentiality FCC ID: 2AK8Q-HWD01161 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description BOM Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Zhiying Lan Title: Manager