Bosch 7738110090 Comfort Room Controller, 4 mA, 3-1/4 in H
Bosch Comfort Room Controller, 4 mA, 3-1/4 in Height, 3-1/4 in Width, 1-1/6 in D, For Use With: Bosch Greenstar Series, Buderus GB142 and GB162 Series Boiler
CRC100 is an integrated temperature sensor that can be used as a boiler control or in conjunction with the CZM100 as a room controller.