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TRV-804ZB is a remote control thermostatic radiator valve for radiator heating system. User can connect the smart valve with the tuya zigbee gateway, then user can set the room temperature, program the auto mode, close/open the child lock, and modify the advanced settings on the phone remotely. Even if user does not connect the valve with zigbee gateway, the radiator thermostat still works normally, you can adjust the valve on the device manually.

1. Q: Can I control multiple Zigbee TRVs individually or in groups?

   A: Yes, most Zigbee TRVs support both individual and group control. You can set unique temperatures for each radiator via the app, or create groups (e.g., “Living Room” or “Upstairs”) to adjust multiple valves simultaneously for consistent comfort.

2. Q: Why is my Zigbee TRV not responding to app commands?

    A: Common reasons include weak Zigbee signal (move the hub closer or add a Zigbee repeater), dead batteries, or lost pairing. Check signal strength in the app, replace batteries, and re-pair the valve with the hub if the connection drops.

3. Q: Can a Zigbee TRV work without internet, and does it support scheduling?

    A: It works locally with a Zigbee hub (no internet needed) for basic temperature control and pre-set schedules. Internet access is only required for remote control via smartphone, voice commands, or syncing with weather data for adaptive heating.

4. Q: How long is the product warranty period?

    A: Our products come with a 2-year free warranty. If there is a quality issue (such as failure to turn on or unresponsive buttons) after you receive the goods, you can contact the after-sales customer service and provide the order number and photos of the problem. We will arrange for a replacement or repair.

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