MC-38 Magnetic Sensor Anti Theft Alarm

MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System Detector, No external power supply, connect to wired or wireless alarm control panel GND and N.C. NC means Normally When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ). The magnetic reed switch is composed of switch and magnet, and the switch parts is made of reed switch and pigtail. The magnet is coved by the plastic or alloy shell. When the switch and the magnet is shape apart or close to each other in the certain range, the switch will turn on or off automatically, so it will change the installed items’ place.