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Featured with round cap cover
5-1mm larger than the diameter of the female rod
construction
Applicable to machinery control boxes
Pre-made video and power connectors
5 x Door Window Normal Closed Contact Security Safety Alarm Magnetic Reed Switch Sets Curtain Accessories Featured with round cap coverNC 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 make order,pls check carefully! 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. Ellwood. It consists of a pair of contacts on ferrous metal reeds in a hermetically sealed glass envelope. There
US$ 127.50
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