Device is self check, the digital tube is full, the indicator light is bright. In the temperature setting state, without pressing any key within 5 seconds, the thermostat will automatically save. Yellow light on the panel said the heating mode, the green.

In the temperature setting state, without pressing any key within 5 seconds, the thermostat will automatically save. -up key: used to raise temperature. Yellow light on the panel said the heating mode, the green.