1.Self-Adhesive Mount, Screw Surface Mount contact, ABS Housing. Long wire lead that can side mounted.
2.Switch Type: 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 ).
3.Work as an anti-theft alarm, ideal for wood door and window.
Nc: when the magnet is near, the circuit is on;
When the magnet moves away and the circuit is Off.
No: When the magnet is near, the circuit is off,
When the magnet moves away and the circuit is ON.