Magnetic reed switch normally open

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 . Free delivery and returns on all eligible orders. Lead (three) white (common port), gray (N.C.), brown (N.O.).

When the magnet is next to the switch.

The latter has three paddles: a single reed enters the capillary at one end and two enter from the other, creating .

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.

FREE DELIVERY possible on eligible purchases. The reed switch is an electrical switch operated by an applied magnetic field. By adding an additional nonmagnetic contact that is electrically closed with no magnetic field present, a Single-Pole, Double-Throw switch can be made. Unlike mechanical switches they do not require something or someone to physically flick them on or off, they are controlled completely by invisible magnetic fields!

I had low cost normally open magnetic reed switch but my project needs normally closed magnetic switch. However, buying the right magnetic switch can be tricky at times. Reed switches have three basic configurations: Normally.

Material: glass conductive metal pin. You have both types of contacts on the one unit, so you will always have the correct one! Longer cable variants are available. Come check out our site, we have lots of parts for inventors.

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. Buy products related to reed switches and see what customers say about reed switches on Amazon.

Home window alarm reed switch with magnet. Three electrical contacts for normally open and normally closed wiring. The sealed stem encapsulates the hermetically sealed reed switch and its wires from the liquid environment. Can be mounted to any door or window to detect an opening or closing event.

Adds alarming for intrusion or unauthorized entry to your monitored conditions. Introduction: magnetic reed switch ( magnetic reed sensor) is an electrical switch operated by an applied magnetic field. The contacts may be normally open , . The pigtail lead wires are inches long. Commonly used with security systems.

Low contact resistance and high speed operation. Suits many applications including sensors, proximity switching instrumentation and al.