✔ OpenTherm Compatible. EPH CP4 V2 Wireless Programmable RF Room Thermostat & Receiver – Box of 10. ✔ Box of 10 EPH CP4 V2 Thermostats. 10 x EPH CP4 V2 Wireless Programmable Thermostats. Without the hub, the thermostat will operate as a standard wireless programmable room thermostat.
