Wiring Diagram :

On Functionality:
1. Rich function options, Modbus, WIFI, keycard, etc., to meet all your 
needs;
2. Strict temperature control accuracy (±1℃) to provide the warmth you 
want;
3. Power off protection, save all your settings safely;
4. Provide weather information and humidity display
5. Preset adjustment of 5+1+1 mode in a week, programmable setting of 
6 time periods a day, green energy saving,
Less cost, more intelligence, and environmental protection;
6. Support the creation of product local groups/shares to achieve 
unlimited centralized control of the number of products/
multi-terminal control;
7. Perfect access: Tmall Genie, Amazon Echo, Google Home, full 
experience new voice control method;

Becasmart BHT-006 Series Smart Heating Thermostat