The battery-powered thermostat MH-F20 will capture indoor temperature and report the value to gateway and control heating system like furnace, on/off valve through associated actuator module. It is designed to be surface-mounted for quick and easy installation. You do not even need a junction box behind the device so it’s a good fit for retrofit project.
*Power supply: 2*AAA dry battery or 5V USB Type-C charge
*Temp. setting range:5~37℃(41~98.6℉)
*Casing material:PC
*Dimension:86*86*16mm
*Installation:83.5mm hole pitch