The EPH OpenTherm® Mains Operated Programmable Room Thermostat delivers precise temperature control for single heating zone applications. Mounted on a 6-pin industry standard backplate, this mains-powered unit provides flexible upgrade pathways from heating to hot water control. Advanced control modes include OpenTherm®, Optimum Start, TPI and On/Off functionality, ensuring compatibility across diverse heating systems. Boiler Plus Compliant design meets current regulatory standards for energy efficiency and performance. The adjustable switching differential from 0 to 1.0°C enables fine-tuned temperature regulation, while the SPDT contact configuration supports multiple installation requirements. Temperature range spans 5-35°C for comprehensive climate control. Features & Benefits: Mains powered operation at 230Vac 50Hz for reliable performance. OpenTherm®, Optimum Start, TPI and On/Off control modes for system flexibility. Boiler Plus Compliant, meeting regulatory standards for energy efficiency. Adjustable switching differential from 0 to 1.0°C for precise temperature regulation. Suitable for residential heating systems, commercial climate control, and single-zone temperature management applications. 6-pin industry standard backplate enables straightforward upgrade from heating to hot water control. Switch Rating: 8A 230Vac (1840W). Contact Type: SPDT. Temperature Range: 5-35°C. IP Rating: IP20.