The 24 V thermo-electric actuator from Merten (model 639126) is a reliable solution for controlling heating, air conditioning, and ventilation systems. It enables precise control of valves in radiators, convector heaters, and cooling ceilings. The actuator is designed for 2-point or PWM control and is ideal for individual room control of underfloor heating as well as for managing heating circuit distributors. With a factory-set fail-safe open function, the heating can already be operated during the construction phase. The actuator features a functional display for the positions Open, Closed, and Intermediate, which facilitates monitoring and control of the settings. Its robust design and IP54 protection rating ensure high reliability in various environments.

• Fail-safe open function for operation during the construction phase
• Fail-safe closed for increased safety
• Compatible with various valve bodies and heating circuit distributors
• Easy installation with plug-in connection cable
• Temperature range from 0 to 100 °C for versatile applications.