Magnetic Reed Switch Door Sensor

Build a raspberry pi door window sensor with reed relais.

Magnetic reed switch door sensor.

Magnetic reed switch by b. These packages offer resistance to mechanical stress by protecting the bare glass of the reed switch. In its simplest and most common form it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope. Bnyzwot mc 38 surface mount wired nc door sensor alarm magnetic reed switch white 10 pair.

Ring alarm window and door contact sensor 6 pack 2nd gen item 2366870. Please donate if you like my material. Push button switch by angelo de falco november 1 1966. The original elwood reed switch patent as pictured above.

Get it as soon as thu oct 1. It does not matter which of the two cables of the magnetic switch is connected to the base of the transistor. And charlie dwain mariner july 26 1977. 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.

For pricing and availability. However for an application such as a door security sensor the reed switch needs a protective shell housing for handling and mounting. 5 coupon applied at checkout save 5 with coupon. For pricing and availability.

The free end should be attached to the window door and the one with cable best to the fixed door window frame. 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. 4 0 out of 5 stars 18. The contacts are usually normally open closing when a magnetic field is present or they may be.

A bare reed switch can easily be mounted on circuit boards. Refers to the time when the magnet is not near the switch. A more sophisticated design. Ring alarm window and door contact sensor 2 pack 2nd gen item 2221347.

When i tested the switch yesterday i learned that in the case of a magnetic reed switch the word quot normal quot.