External converters

Zigbee2MQTT uses zigbee-herdsman-converters to parse messages to and from devices.

External converters provide a way to test support for new devices, they work identically to internal converters.

External converters are stored in data/external_converters folder and have to export a JavaScript Object or Array of Object matching the type DefinitionWithExtend. Refer to existing converters to get familiar with the framework.

Example:

File: data/external_converters/my-first-converter.js

const {temperature, humidity, battery} = require('zigbee-herdsman-converters/lib/modernExtend');

const definition = {
    zigbeeModel: ['lumi.sens'],
    model: 'WSDCGQ01LM',
    vendor: 'Xiaomi',
    description: 'MiJia temperature & humidity sensor',
    extend: [temperature(), humidity(), battery()],
};

module.exports = definition;

More examples

• Sensor using modern extends (same as above)
• Sensor using non modern extends
• Bulb (light)
• Plug (switch)
• Advanced example
• Definitions of already supported devices can be found here. It may help to look at devices from the same vendor or type.

Using modern extends

The entire API can be found here.

Using non modern extends

The most common API endpoints are accessible from the following imports:

const fz = require('zigbee-herdsman-converters/converters/fromZigbee');
const tz = require('zigbee-herdsman-converters/converters/toZigbee');
const exposes = require('zigbee-herdsman-converters/lib/exposes');
const reporting = require('zigbee-herdsman-converters/lib/reporting');
const ota = require('zigbee-herdsman-converters/lib/ota');
const utils = require('zigbee-herdsman-converters/lib/utils');
const globalStore = require('zigbee-herdsman-converters/lib/store');
const e = exposes.presets;
const ea = exposes.access;

Converters list

When Zigbee2MQTT starts it publishes zigbee2mqtt/bridge/converters with payload [{"name": "my-first-converter.js": "code": <HERE COMES YOUR CONVERTER CODE>}] containing all the converters loaded from the file system. The same message is also published when a converter changes at runtime (from one of the below actions), with the appropriately updated payload.

Save converter

To save a converter at runtime, send a message to zigbee2mqtt/bridge/request/converter/save with payload {"name": "my-first-converter.js", "code": <HERE COMES YOUR CONVERTER CODE>}. The code will be saved in data/external_converters/ in the file with the given name.

Remove converter

To remove a converter at runtime, send a message to zigbee2mqtt/bridge/request/converter/remove with payload {"name": "my-first-converter.js"}. The file will be deleted from data/external_converters/.