Aoje-Link MC-51 NC + NO Wired Magnetic Switch Door Window Reed Switch Micro Alarm Magnetic Contact Security Silver Gray 1pcs

• Product Content: 1 x MC-51 Magnetic Door Switch; Color: Silver Gray, Material: Zinc Alloy.
• Size: 32mm x 15mm x 8mm/1.26" x 0.59" x 0.31" (L*W*H).
• Contact Type: NC/NO, Actuation Distance: 20-30mm, Max Voltage: 100V, Max Current:0.5A.
• Door contact sensors used with commercial or residential access systems and all security access and burglar alarm system.
• Integrated zinc alloy manufacturing, durable and high strength. Work as an anti-theft alarm, ideal for wood or metal door and window.

Magnetic Reed Switch Alarm Surface Mount Wired Contact Sensor Sharp alarm will be heard when someone opens window or door in arming status,The reed switch is an electrical switch operated by an applied magnetic field. Keep your house safe with this door security alarm. 1.By screws to install, High-Quality Zinc Alloy. 2.The reed switch is an electrical switch operated by an applied magnetic field. 3.The magnetic switch alarm is with durable zinc alloy housing for better rust resistance 4.Switch Type: NC/NO, 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 ). NO means Normally Open: when the magnet separate, the circuit is not conductive( light on ); When the magnet together, the circuit is conductive ( light off ). 5.Work as an anti-theft alarm, ideal for wood or metal door and window.