Magnetic Reed Switch Door

Get it as soon as thu oct 1.

Magnetic reed switch door.

2sets magnetic reed switch normally open closed nc no door alarm window security magnetic door switch magnetic contact switch reed switch for gps alarm or other device dc 5v 12v 24v light. Get it as soon as thu oct 8. The switch that we are going to use has two parts. Introduction to reed switches magnets and magnetic fields by stephen day.

The contacts are usually normally open closing when a magnetic field is present or they may be. Aleko magnetic reed switch security alarm for door window bs mc12s m 1 set. Describes various ways of making a normally closed switch. 4 3 out of 5 stars 175.

Free shipping on your first order shipped by amazon. However for an application such as a door security sensor the reed switch needs a protective shell housing for handling and mounting. 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. Wilkis october 17 1967.

When i tested the switch yesterday i learned that in the case of a magnetic reed switch the word quot normal quot. A magnetic contact switch is basically a reed switch encased in a plastic shell so that you can easily apply them in a door a window or a drawer to detect if the door is open or closed. In its simplest and most common form it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope. 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.

A bare reed switch can easily be mounted on circuit boards. The switch itself that usually comes opened and the magnet. Speedda 6 sets magnetic reed switch normally open closed nc no door alarm window security magnetic door switch magnetic contact switch reed switch for gps alarm or other device dc 5v 12v 24v light. A switch with one magnetic reed and one non magnetic one.

Quite a neat summary of how reed switches are used in. Refers to the time when the magnet is not near the switch. These packages offer resistance to mechanical stress by protecting the bare glass of the reed switch.