The CHV-RTS is a wall-mounted remote temperature sensor designed for use with select Crestron® thermostats. designed for use with select Crestron® thermostats. The 1-1/2 in. (39 mm) diameter face of the CHV-RTS protrudes just 1/8 in. (3 mm) from the wall surface and is easily painted or wallpapered to blend into the wall surface.