Feature:1. For Valve: Long key for the water valve made of durable material and surface treatment and great fit the valve shaft.2. Compatible Models: It is suitable for microswitch, microswitch heater, instant microswitch.3. Compatible Appliance Types: Suitable for boiler, boiler instantaneous, heater, instantaneous heater.4. High Performance: Contact spacing is small, short stroke action, according to the power of small, fast break.5. Durable and Long Lasting: Made of durable iron and plastic material, the micro switch is durable for long service life.Specification:Item Type: Micro SwitchMaterial: Iron, plasticWeight: Approx. 50g/1.76ozCompatible Appliance: Suitable for boiler, boiler instantaneous, heater, instantaneous heater..Package List:1 xMicro Switch