Truma Room Temperature Sensor This room temperature sensor feeds the ambient temperature reading back to your Truma heating control, allowing it to maintain the level you set. It works with Truma Combi boilers as well as the 3002 and 5002 heaters. Why choose this temperature sensor Accurate room reading — lets the control hold your chosen temperature Wide compatibility — works with Combi boilers and 3002/5002 heaters Genuine Truma part — matched to the original heating system Specification Manufacturer: Truma For Truma Combi boilers and 3002/5002 heaters Room temperature sensor Part number: 34020-00263 Barcode: 4052816007052 A small part that keeps your cabin at the right temperature. As a fitment part, please check this part number against your existing part before ordering.