Midea "Wireless 433MHz programmable room fan coil thermostat HL3920"

The HL3920 series thermostat is a wireless thermostat to control 2-pipe or 4-pipe fan coil unit and controller  that can be placed  anywhere at your home, office.

The HL3920 thermostat pack consists of a room thermostat and a relay box. No wiring to the room unit is required. The installer only needs to wire the relay box to the controlled device (e.g. fan coil unit) and mount the room unit in a suitable location where RF communication is reliable. The A3920 thermostat uses reliable RF communication technology in the 433MHz band.

The HL3920 extra large LCD display, symbol display. The unit is ideal for consumers who want reliable and precise temperature control from a modern looking, simple to program and easy-to-use product.