Normally open reed switch

The two contacts of the reed switch become opposite magnetic poles, which is why they attract and snap together. A reed switch like this is normally open (NO) (normally off), unless . The latter has three paddles: a single reed enters the capillary at one end and two enter from the other, creating . Free delivery and returns on all eligible orders. The reed switch is an electrical switch operated by an applied magnetic field.

Since their unalarmed state is for them to be open , if the cable going to them is cut then the alarm will not trigger, and of course not be triggerable anymore.

Lead (three) white (common port), gray (N.C.), brown (N.O.).

By adding an additional nonmagnetic contact that is electrically closed with no magnetic field present, a Single-Pole, Double-Throw switch can be made. Reed switches have three basic configurations: Normally. Battery operated electronics requiring switching functions. FREE DELIVERY possible on eligible purchases. I had low cost normally open magnetic reed switch but my project needs normally closed magnetic switch.

You have both types of contacts on the one unit, so you will always have the correct one! It has compact size and light weight which can be installed in extremely limited space,very suitable for miniaturization of devices. Normally Open (N.O.) and Normally Closed (N.C.) per pair.

You can get reed switches that are open with the magnet nearby. The magnet needs to be stronger, though. When the magnet is next to the switch.

This is the Magnetic Door Switch Set, a small reed switch assembly specifically designed to alert you when doors, drawers, or any other aperture opens. These types of switches are primarily used in home security systems. The Shiny Clutch and Aromatherapy Sachet in our book Switch Craft are two examples. However, buying the right magnetic switch can be tricky at times. But whether those terminals are normally open or closed is another question.

Longer cable variants are available. Buy products related to reed switches and see what customers say about reed switches on Amazon.