ALEKO 5BS-MC13S 5 Sets of Magnetic Contact Reed Switches Security Alarm Contacts for Doors Windows and Other Applications Install with screws or with super adhesive. 100% brand new. Slim terminal connection design. Ideal for residential and commercial applications. ABS housing. Recommendations in application: wooden door, window, metal doors, gates and any other compatible application. MODEL: 5BS-MC13S Quantity: 5 Sets