Item Tag: Zaplyte

  • 1 Set RC-33B NC Magnetic Window Door Contact Alarm Reed Switch Recessed

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    Description: Easy to install and easy to use. Widely used in security window door contact. Recessed mounting, white ABS fireproof plastic shell which has a long life. 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 ). When…

  • Door Window NC Contact Security Safety Alarm Magnetic Sensor Reed Switch

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    Descriptions: Switch Type: NC(normal closed type), the circuit is closed normally, and, that if a magnet not near it, the circuit open. The Reed Switch is an electrical switch operated by an applied magnetic field. It was invented at Bell Telephone Laboratories in 1936 by W. B. . It consists of a pair of contacts…