[Dimension] - Cable Length: 25cm/9.8"; Total Size: 17mm x 10.6mm/0.67" x 0.42" (L*D)
[Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available
[Normally Closed] - N.C. means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separates, the circuit is not conductive ( light off ).
[Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!
