5 Sets MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch

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】: GDQLCNXB 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.

• 【Package Included】: 5 Sets x MC-33C Door Contact Sensors
• 【Application】: The door contact sensors work as an anti-theft alarm, ideal for metal door and window.
• 【Easy To Install】: Have small screw terminals which makes it much easier to wire. Closed loop magnetic contact that features a terminal block style connection for accepting wire. Mounting hole diameter is about 3/8 inch (9.5mm)
• 【Contact Type】: NC (Normally Closed); NC means Normally Closed: When the magnet together, the circuit is conductive( light on ); When the magnet separate, the circuit is not conductive ( light off )
• 【Hassle-Free Warranty】:GDQLCNXB 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.