✨Feature:
1.Designed for use with alarm systems.
2.Works for aluminum sliding windows and doors.
3.Great for use in family and factory window, door. etc.
4.Have small screw terminals which makes it much easier to wire.
5.Closed loop magnetic contact that features a terminal block style connection for accepting wire.

✨Specification
Material: ABS
Model: MC-33C
Color: Black, White
Contact Type: NC (Normally Closed)
Mounting Hole Diameter: about 3/8 inch (9.5mm)

✨Package Included:
5 Sets x Normally Closed Recessed Window Door Contact Sensors

✨【Hassle-Free Warranty】:
Hxchen guarantee high quality and good service. Here with our 90-day money back risk-free purchase guarantee, order now! If you are not satisfied in any way, Refund or Replacement for any quality problem.