The Bosch HVAC 87145000810 DHW Temperature Sensor is a replacement component designed to monitor domestic hot water temperature in compatible Bosch heating systems. It detects temperature changes and sends readings to the control system, allowing the equipment to regulate heating operation and maintain the desired water temperature. This sensor is used in compatible boilers, water hea... https://www.partshnc.com/bosch-hvac-87145000810-dhw-temperature-sensor