Horstmann HRT4-ZW Wireless Electronic Room Thermostat 5°C – 30°C
Wireless Z-Wave electronic room thermostat avoids disruptive and time consuming wiring. Compatible with most heating systems.
With proven Z-Wave wireless technology using the 868.42 MHz operating frequency, the thermostat unit features a constant RF status display with
its receiver being mains powered with volt free contacts.
Takes 2 x AAA batteries (included)