RTX ZB-RT1 ZigBee thermostat weekly schedule

Hi! I have a number of RTX ZB-RT1 thermostats and would like to change setpoints in standard way: lower temperature at night and while I’m at work, comfort temperature in the evening and weekends.
The leaflet says, with TuYa app one can set weekly schedule for each unit, but such feature is not exposed over zigbee2mqtt.

zigbee2mqtt recognised the device as SEA801-Zigbee/SEA802-Zigbee.

All I can do is set temperature and one of three modes: auto, heat, off.
I think TuYa may keep the schedule in the gate -not on device, but I have another thermostat which has the schedule exposed as if it was on-device.

Is there a way to check what features are exposed from the device in case the device has more functions than SEA802?

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