Features Precise Control: Automatically control the return valve on the heating circuit distributor via the indoor thermostat, ensu precise and efficient temperature regulation. Compatible with Buderus, , Kermi, and more. Strong Operating Force: Boasts a 100N operating force and 4mm drive, providing reliable and powerful performance. Offers quiet operation and requires no maintenance, ensu long-term functionality. Superior Material: Crafted from flame-retardant PC material, ensu safety and durability. Provides exceptional flame retardant performance for added peace of mind. High Compatibility: Works at 230VAC, with a flame retardant class of IP54, and an operating temperature range of -25°C to 65°C. Executing at a height of 3-5mm, it ensures compatibility with various heating systems. Easy Installation: Features nut connection installation for convenient and quick setup, making it simple to operate and install. Specification: Item Type: Electrothermal Actuator Main Body Material: Flame Retardant PC Working Voltage: 230VAC Flame Retardant Rating: IP54 Working Temperature: -25-65℃ Execution Height: Approx. 3-5mm / 0.12-0.20in Connection Size: M30x1.5m Package List: 1 x Electrothermal Actuator Package List 1 x Electrothermal Actuator