uxcell Rolling Door Contact Magnetic Reed Switch Alarm with 2 Wires for N.C. Applications MC-52 2Set

Price: $19.49
(as of Apr 02, 2023 21:12:21 UTC – Details)

[Dimension] – Cable Length: 23cm/9.1″; Total Size: 49mm x 20mm x 10mm / 1.93″ x 0.79″ x 0.39″(L*W*H)
[Material] – The magnetic switch alarm is with durable zinc alloy housing for better rust resistance
[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 ).
[Applications] – The Rolling Door Contact is designed for use with window and door alarm systems, such as garage, industrial warehouse and shops, etc.