The product can control water flow through an underfloor heating system. With 2-wire connection, it has one valve per loop. The item can lock quickly, and red spot indicator is on the top. It can be fixed easily to an adapter ring. Item Name: Actuator Material: Retardant PC Type: Normally Open/Normally Close Voltage: 230V Power: 2W Thrust: 110N Route:3.5mm-4mm Time: 3-5Min Connecting Size: M30x1.5mm Environmental Temperature: -5~60 Degree Celsius Waterproof Level: IP44 Size: 5.8cm x 4cm/2.28" x 1.57" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Actuator