1 Set RC-33B NO Magnetic Window Door Contact Alarm Reed Switch Recessed
Description:
Easy to install and easy to use.
Widely used in security window door carbinet contact.
Recessed mounting, white ABS fireproof plastic shell which has a long machanical life.
Switch Type: NO(normal open type), NO means Normally Open: when the magnet separate, the circuit is not conductive( light on );When the magnet together, the circuit is conductive ( light ooff ).When make order,pls check carefully!