Liftmaster 41C4398A RPM Sensor Assembly
- Made of flame retardant ABS housing material,high temperature resistant,not easy to deform..
- Contact Type:NC(Normally Closed).Can be added to wireless home security systems such as video surveillance cameras..
- Wire length:25cm/1".Sensitive response,accurate detection.Fine workmanship ensures its reliability..
- Easy to install.This door contact can be used with access control or burglar alarm system..
- Package Included: 2pcs Recessed Door Magnetic Switch..