Specifications:Product Name Door Magnetic Reed Switch Model RC-36 Contact Type NO/NC(Normally Open/ Normally Closed) Contact Capacity 0.5A Voltage DC 100V Rated Power 10W Actuation Distance 15-20mm Each Size(Approx) 22 x 23mm / 0.87" x 0.9"(H*D) Cable Length(Each) 34cm/ 13.4" Color Brown Housing Material ABS Weight 71g package Content 3x Door Magnetic Reed Switch Description:NO NC type designed for use with alarm systems. Great for use in family and factory window, door. etc.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 ). When make order,pls check carefully!.
eBay