TZE200.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 e = exposes.presets;
const ea = exposes.access;
const tuya = require("zigbee-herdsman-converters/lib/tuya");

const definition = {
    // Since a lot of Tuya devices use the same modelID, but use different data points
    // it's usually necessary to provide a fingerprint instead of a zigbeeModel
    fingerprint: [
        {
            // The model ID from: Device with modelID 'TS0601' is not supported
            // You may need to add \u0000 at the end of the name in some cases
            modelID: 'TS0601',
            // The manufacturer name from: Device with modelID 'TS0601' is not supported.
            manufacturerName: '_TZE200_u319yc66'
        },
    ],
    model: 'Zigbee-818',
    vendor: 'Tuya',
    description: 'Smart Gas Leakage Detector',
    fromZigbee: [
        {
            cluster: 'manuSpecificTuya',
            type: ['commandSetDataResponse', 'commandDataReport', 'commandDataResponse'],
            convert: (model, msg, publish, options, meta) => {
                const dp = msg.data.dp;
                // meta.logger.error(`From Zigbee: ${dp}: ${JSON.stringify(msg.data)}`);

                const result = {};
                for (const dpValue of msg.data.dpValues) {
                    const dp = dpValue.dp;
                    const value = tuya.getDataValue(dpValue);
                    const result_lookup = {
                        0: 'checking',
                        1: 'check_success',
                        2: 'check_failure',
                        3: 'others'
                    }
                    switch (dp) {
                        case tuya.dataPoints.state:
                            return {gas: value === 0 ? true : false};
                        case 8:
                            return {self_test: value === true ? 'ON' : 'OFF'};
                        // case 9:
                        //      return {checking_result: result_lookup[value]}
                        case 16:
                            return {muffling: value === true ? 'ON' : 'OFF'}
                        default:
                            meta.logger.error(`zigbee-herdsman-converters:tuya_gas: Unrecognized DP #${
                                dp} with data ${JSON.stringify(msg.data)}`);
                    }
                }
                return result;
            }
        }
    ],
    toZigbee: [
        tz.tuya_data_point_test, // Another debug converter
        {
            key: ['self_test'],
            convertSet: async (entity, key, value, meta) => {
                await tuya.sendDataPointBool(entity, 8, value === 'ON');
            },
        },
        {
            key: ['muffling'],
            convertSet: async (entity, key, value, meta) => {
                await tuya.sendDataPointBool(entity, 16, value === 'ON');
            }
        }
    ],
    onEvent: tuya.setTime, // Add this if you are getting no converter for 'commandSetTimeRequest'
    configure: async (device, coordinatorEndpoint, logger) => {
        const endpoint = device.getEndpoint(1);
        await reporting.bind(endpoint, coordinatorEndpoint, ['genBasic']);
    },
    exposes: [
        e.gas(), exposes.binary('self_test', ea.STATE_SET, 'ON', 'OFF'), exposes.binary('muffling', ea.STATE_SET, 'ON', 'OFF')
    ],
};

module.exports = definition;

Thanks for this!
You made my day!