3 Sets NO Recessed Door Window Contact Magnetic Reed Switch Alarm Security

Description: Screw surface mount contact, white ABS housing. 27cm long wire that is side mounted. Comes with twelve installation screws. Switch Type: NO(normal open type), the circuit is open normally, and, that if a magnet comes near it, the circuit closed.

Voltage : DC 100V;Rated Power : 10W;Gap : 15-25mm Each Size(Approx) : 64 x 13x 13mm / 2.5" x 0.51" x 0.51"(L*W*H);Mounting Hole Dia. : 4mm/ 0.16";Wire Length(Each) : 27cm/ 10.6" Color : White;Housing Material : ABS Weight : 59g;package Content : 3PCSx Magnetic DoorContactReed Switch12 x Installation Screws