... 4.Voltage:6-12V Best Waterproof Universal Remote Control for Home / Car Alarm Specification: PictureModelSpecificationHS-238-21. Working voltage: 12V2. ... price,widely used in garage door ,rolling door , car alarm system ,home appliance,remote switch ,LED and other industral ... : It is very easy and convenient used for home/store anit-theft alarm,electric cars,,motorcycles, automobile ,car alarms,all ...