Zigbee Connection Standard for Gas Detector

A Zigbee gas detector is a low-power device that is used to detect whether there is a gas leak within the detection range of the sensor and sends a remote alarm. It is implemented by the IAS ZONE device in the Zigbee 3.0 standard.

Terms and definitions

Functional description of Zigbee devices

Zigbee protocol version

The product is developed based on the Zigbee 3.0 standard protocol.

Endpoint

Supported clusters

Supported attributes and commands

Each gateway can read and write specific attributes of Zigbee devices to get the device information.

Basic cluster

Attributes

Power configuration

Attributes

IAS zone

Attributes

Commands:

Over The Air Upgrade

Attributes

Commands:

Zigbee device management requirements

Networking requirements

• Beacon request channels are scanned at an interval of greater than 200 ms. Important channels to be scanned in priority.

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

• If a data report of initial alarm status value and initial battery level (100%) 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

• After the device is powered off and started, it needs to synchronize the necessary data with the gateway, such as battery level and alarm status.

Link maintenance

• The battery level information is reported every 4 hours. The battery level report is used as a heartbeat packet, which is the basis for judging whether the device is offline. If there is no data interaction with the gateway within 12 hours, the gateway will determine that the device is offline.

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.

• The data reporting interval should be at least 100 milliseconds to prevent frequent reporting, which will cause the app to display disorderly.

Special instructions

• Low-battery warning conversion

  Since the low-battery warning is sent by the underlying structure through instructions, the low-battery instruction alarm needs to be converted into a Zigbee power report.

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.