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Magnetic reed switch door sensor. A more sophisticated design. 2x magnetic reed switch normally open closed nc no door alarm window security magnetic door switch magnetic contact switch reed switch to dc 5v 12v 24v light black 4 1 out of 5 stars 20 9 99 9. A switch with one magnetic reed and one non magnetic one. Get it as soon as thu oct 1.
The reed switch is an electrical switch operated by an applied magnetic field it was invented at bell telephone laboratories in 1936 by walter b. Free shipping on your first order shipped by amazon. Magnetic reed switch by b. A bare reed switch can easily be mounted on circuit boards.
For pricing and availability. For pricing and availability. Bnyzwot mc 38 surface mount wired nc door sensor alarm magnetic reed switch white 10 pair. In the customer s garage door detector he should use the normally closed nc contacts which are open when the garage door is closed and the magnet is near the switch.
Build a raspberry pi door window sensor with reed relais. Ring alarm window and door contact sensor 2 pack 2nd gen item 2221347. The free end should be attached to the window door and the one with cable best to the fixed door window frame. And charlie dwain mariner july 26 1977.
Push button switch by angelo de falco november 1 1966. When i tested the switch yesterday i learned that in the case of a magnetic reed switch the word quot normal quot. However for an application such as a door security sensor the reed switch needs a protective shell housing for handling and mounting. It does not matter which of the two cables of the magnetic switch is connected to the base of the transistor.
In its simplest and most common form it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope. These packages offer resistance to mechanical stress by protecting the bare glass of the reed switch. 5 coupon applied at checkout save 5 with coupon. Please donate if you like my material.
The original elwood reed switch patent as pictured above.
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