1This electric ball valve comes with two wires. The easiest way to use is to connect directly to a power source or a simple switch. Because this is an automatic return valve, you can close the valve by simply turning off the power. 2Made of durable brass, this valve is safe and reliable; it has an expected lifespan of 80,000 to 100,000 cycles, which means it is built to last. 3Works effectively across the entire voltage range: 110V AC; will open or close the valve in 13-18 seconds. Automatically cuts off power after fully open or fully closed. 42-Wire Auto Return Setup - Simple two-wire connection, the valve automatically de-energizes after opening; if power is lost, it returns to fully closed. This reduces the possibility of overheating, making it a great replacement for solenoid valves for projects that require the valve to be open for long periods of time. 5DN15 and DN25 two models for you to choose.This 2 way 3-wire ball valve can rotate 90 degrees.