Zigbee Connection Standard for Smart Switch

The Zigbee smart switch (no neutral wire required) is a controlled device that uses magnetic latching relays to achieve switching actions and can receive switching instructions to act on the load lights.

Use the On Off Light device in the Zigbee 3.0 standard to achieve this feature.

Terms and definitions

Functional description of Zigbee devices

Zigbee protocol version

Endpoint

Supported clusters

Supported attributes and commands

Basic cluster

Attribute:

Commands:

Identify cluster

Attribute:

Commands:

On/Off cluster

Attribute:

Commands:

OTA update cluster

Attribute:

Zigbee device management requirements

Networking

• Beacon request channels are scanned at an interval of greater than 150 ms. Important channels are to be scanned in priority.

• The timeout value for each scanning task is 30 seconds.

• If data reporting is required after Zigbee devices are networked, data is reported at a random interval of 5s, 10s, or more seconds.

Device restart after power off

The device supports the power-off memory function. When power-off and power-on again, it is necessary to read the switch status, the status of the magnetic latching relay (single and dual control), and the status of the load light group before power-off.

Link maintenance

The device version is continuously reported at a random interval of 150–180 seconds.

Data reporting

• If data retransmission is enabled for the application support sublayer (APS), we recommend that you set Disable Default Response to 1 to avoid excessive acknowledgments (ACKs).

• The Transaction Sequence Number attribute cannot be modified during data transmission.

• The retransmission interval must be greater than 250 ms. We recommend that you set the retransmission duration to less than three seconds.

• To process broadcast and multicast DPs, we recommend that you set the latency of data reporting to a random value from one minute to two minutes. If a unicast DP is received during the latency, the status data is immediately reported.

Special instructions

Countdown

• The countdown function is implemented with the 0x42 command of the Zigbee on/off cluster.

• After the countdown command is received, the device starts to count down. The count value is decreased by 1 every second. The countdown data is written to the OnTime and OffWaitTime attributes.

• After the count value becomes 0, the bits are reversed and the switch status and values of OnTime and Off Wait Time are reported to the gateway.

Development method

1. Developed based on Tuya Zigbee SDK:

   • You only need to modify the module model and hardware configuration of the demo sample to complete the above functions, including groups and scenes.
   • Tuya provides complete flashing, authorization, production testing process, software and hardware tools
     • Zigbee Chip SDK
     • Production Test Tools

2. Self-developed with non-Tuya Zigbee module:

   • Need to fully implement the above technical details
   • Complete device authorization

3. Authorize by using Tuya’s complete authorization tool

   • Through the module and the host computer serial communication authorization: See Production Test of Zigbee SDK.

   • Serial communication sample code: See Authorize by Using Tuya Authorization SDK.

4. Self-developed with Tuya Zigbee module:

   • Only need to implement firmware function details.
   • Purchase the authorized Tuya Zigbee module.