[N.C.] - 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 ). . 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.
[Material] - The magnetic switch alarm is with durable zinc alloy housing for better rust resistance.
Customer satisfaction is our greatest pursuit, if you found that our products do not work or quality not as good as you think, please contact us without hesitation.
