Simple installation, two-wire connection, one valve per circuit, installation size M30 x1.5. Normally closed actuator, opens automatically when energized, no noise, maintenance free. Controls the of water through the underfloor heating system, suitable for temperature control in homes, hotels, shopping malls and other places. Used to open and close underfloor heating water separator, central air conditioning (water system) and small valves. Small size, light weight, space saving. 2W low consumption, saving., Weight: 0.53682560797 Pounds, Manufacturer: Jaywool