Magnetic Door Contact Reed Switch Security Alarm Set for Door Window

1.Anti-fire ABS shield.
2.Suitable to used in apartment, hotel, office, etc.
3.The entry alarm adopts magnetic sensor design to detect any entry from door or window.
4.Easy to install, it will warning you somebody is coming in with loudly and harsh sound.
5.Mounting screws are included here.

Specification:
Product Name: Magnetic Door Switch Set
Color: White
Material: Plastic, Metal
Net Weight: 22g
Package Content: 1 x Magnetic Door Switch Set, 5pcs x Screw
Total Size: 55 x 12 x 11mm/2.2-inch x 0.47-inch x 0.43-inch(L*W*H)
Model: MC-31B
Contact Type: NC/NO Optional
Connecting Mode: N.C./N.O./COM
Operating Distance: 15-25mm/0.6Inch-1Inch
Electrical Parameters: 3W, 100VDC, 0.3A
Hole Size: 7 x 2.5 mm/0.28-inch x 0.1-inch (L*W)
Hole Center Distance: 45mm/1.8-inch