Specification Brand : uxcell BulletPoint1 : Product Name : Magnetic DoorContactReed Switch;Contact Type : NC Normally Close;Contact Capacity : 0.5A(Maximum Switch Current) BulletPoint2 : Voltage : DC 100V;Rated Power : 10W;Gap : 15-25mm BulletPoint3 : 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" BulletPoint4 : Color : White;Housing Material : ABS BulletPoint5 : Weight : 59g;package Content : 3PCSx Magnetic DoorContactReed Switch12 x Installation Screws Color : White ConnectivityProtocol : X-10 ConnectorType : 2.5,screws CurrentRating : 0.5 amps ExternallyAssignedProductIdentifier1 : 702105585207 ExternallyAssignedProductIdentifier2 : 0702105585207 ExternallyAssignedProductIdentifier3 : 00702105585207 ItemName : uxcell 3PCS NC Normally Close 15-25mm Magnetic Door Window Contact Reed Switch ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 13.6 centimeters ItemPackageDimensions_Width : 11.6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : reed-switches Manufacturer : uxcell Material : Acrylonitrile Butadiene Styrene ModelNumber : a14061100ux0012 MountingType : Door Mount OperatingVoltage : 100 volts_of_direct_current OperationMode : ON-NONE-OFF PartNumber : a14061100ux0012 ProductDescription : Screw surface mount contact, white ABS housing. 27cm long wire lead that is side mounted. Comes with twelve installation screws. 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!