TS0201, _TZ3210_ncw88jfq, LCD Temperature Unit Change

[mag2352]

I have a TS0201, which is a temperature/humidity sensor with a screen. It is mostly supported by z2m, but also has the ability to change the units from C to F on the screen from the Tuya app. This functionality isn't in z2m. The DP in the Tuya IoT website is shown as:

{
        "code": "lcd_temp_unit",
        "custom_name": "",
        "dp_id": 101,
        "time": 1720903782306,
        "type": "enum",
        "value": "f"
}

I tried making an external converter to make this feature work, but I haven't had success. I just set it as a temperatureunitenum, but I'm not sure if that's the right idea.

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 modernExtend = require('zigbee-herdsman-converters/lib/modernExtend');
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 datapoints
    // it's 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: 'TS0201',
            // The manufacturer name from: Device with modelID 'TS0601' is not supported.
            manufacturerName: '_TZ3210_ncw88jfq',
        },
    ],
    model: 'TS0201_new',
    vendor: 'Tuya',
    description: 'Fill in a description of the device here',
    fromZigbee: [tuya.fz.datapoints],
    toZigbee: [tuya.tz.datapoints],
    onEvent: tuya.onEventSetTime, // Add this if you are getting no converter for 'commandMcuSyncTime'
    configure: tuya.configureMagicPacket,
    exposes: [
        // Here you should put all functionality that your device exposes
        e.temperature(),
        e.humidity(),
        e.battery(),
        tuya.exposes.temperatureUnit()
    ],
    meta: {
        // All datapoints go in here
        tuyaDatapoints: [
            [1, 'temperature', tuya.valueConverter.raw],
            [2, 'humidity', tuya.valueConverter.raw],
            [4, 'battery', tuya.valueConverter.raw]
            [101, 'temperature_unit', tuya.valueConverter.temperatureUnitEnum],
        ],
    },
    extend: [
        // A preferred new way of extending functionality.
    ],
};

module.exports = definition;

When I try to set the unit in z2m after using the external converter, this message appears in the logs:

[2024-07-15 15:54:48] debug: 	z2m:mqtt: Received MQTT message on 'zigbee2mqtt/Tuya TH Screen/set' with data '{"temperature_unit":"c"}'
[2024-07-15 15:54:48] debug: 	z2m: Publishing 'set' 'temperature_unit' to 'Tuya TH Screen'
[2024-07-15 15:54:48] error: 	z2m: Publish 'set' 'temperature_unit' to 'Tuya TH Screen' failed: 'TypeError: Cannot read properties of undefined (reading '1')'
[2024-07-15 15:54:48] debug: 	z2m: TypeError: Cannot read properties of undefined (reading '1')

Am I doing something wrong? Or is this something that cannot be realistically implemented?

[czsmith]

Any updates on this issue? I'd like to do the same thing as well.

[fresnoboy]

+1 Yes, I am having this issue too. Does it stick if I reset it in the Tuya app, and then I pair it to z2m?

[TheNutHouse84]

No, tried multiple times pairing to tuya hub, setting to F in tuya app (sensor display changes) then pairing to Z2M. Initiating the pairing process resets the sensor to factory.