uxcell NO Recessed Door Window Contact Magnet Alarm Reed Switch 10pcs Product Name : Door Magnetic Reed Switch;Contact Type : NC;Contact Capacity : 0.5A Voltage : DC 100V;Rated Power : 10W;Actuation Distance : 30-40mm Each Size(Approx) : 23 x 23mm / 0.9" x 0.9"(H*D);Cable Length(Each) : 34cm/ 13.4" Color : Brown;Housing Material : ABS Weight : 171g;package Content : 10x Door Magnetic Reed Switch