[Dimension] - Cable Length: 50cm/19.7"; Total Size: 105 x 37 x 9.6mm, 106.5 x 15.4 x 15mm (L*W*H)
[Material] - The magnetic switch alarm is with durable zinc alloy housing for better rust resistance
[Normally Open] - N.O. means Normally Open: when the magnet separates, the circuit is conductive( light on ); When the magnet together, the circuit is not conductive ( light off ). When make order, pls check carefully!
[Applications] - The Rolling Door Contact is designed for use with window and door alarm systems, such as garage, industrial warehouse and shops, etc.
