ALEKO 10BS-MC03R-K 10 Sets of Magnetic Contact Reed Switches Security Alarm Contacts for Doors Windows and Other Applications Just drill and insert. 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: 10BS-MC03R-K Quantity: 10 Sets