https://github.com/Koenkk/zigbee2mqtt/issues/15669

ext.js

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 extend = require('zigbee-herdsman-converters/lib/extend');
const ota = require('zigbee-herdsman-converters/lib/ota');
const tuya = require('zigbee-herdsman-converters/lib/tuya');
const utils = require('zigbee-herdsman-converters/lib/utils');
const globalStore = require('zigbee-herdsman-converters/lib/store');
const e = exposes.presets;
const ea = exposes.access;

const definition = {
    zigbeeModel: ['TS0012'],
    model: 'TS0012',
    vendor: 'TuYa',
    description: 'Smart light switch - 2 gang',
    whiteLabel: [{vendor: 'Vrey', model: 'VR-X712U-0013'}, {vendor: 'TUYATEC', model: 'GDKES-02TZXD'},
        {vendor: 'Earda', model: 'ESW-2ZAA-EU'}],
    extend: tuya.extend.switch({backlightMode: true, endpoints: ['left', 'right']}),
    endpoint: (device) => {
        return {'left': 1, 'right': 2};
    },
    meta: {multiEndpoint: true},
    configure: async (device, coordinatorEndpoint, logger) => {
        await tuya.configureMagicPacket(device, coordinatorEndpoint, logger);
        await reporting.bind(device.getEndpoint(1), coordinatorEndpoint, ['genOnOff']);
        await reporting.bind(device.getEndpoint(2), coordinatorEndpoint, ['genOnOff']);
        device.powerSource = 'Mains (single phase)';
        device.save();
    },
};

module.exports = definition;