Free delivery and returns on all eligible orders. Reed switches come in two main varieties called normally open (normally switched off) and normally closed (normally switched on). Recommendations in application: wooden door , window. Mounting method: SMD (by screws or double-sided tapes).
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Switch configuration, Normally Closed.
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.). Universal - Normally Open or Normally Closed. The open or closed position is determined by how you attach the wiring. I used the switch to install an indicator light showing if my garage door is . The reed switch is an electrical switch operated by an applied magnetic field. I assumed that was Normally Open with the magnet beside ! This switch is closed when magnet is beside it.
Heavy duty magnetic contacts are also available for roller shutter and up-and-over garage doors. By adding an additional nonmagnetic. NO ( Normally Open ) - No magnet , light up, suitable for drawer as you pull out, the led light up, when drawer close, the magnet is contact with each other, then light off. When the magnet is less than 13mm () away, the reed switch closes. To turn things OFF when the magnet is present, you need this style that has that option.
The catch with this is that the magnet needs to . Note: circuit is connected when. I want it the other way roun buzzer going off when you open . In most cases the reed switch type will be carefully chosen to meet some rest condition. We will use them in our A-H-A project. Magnetic reeds are cheap and really easy to find online.
Can be mounted to any door or window to detect an opening or closing event. There are two options of these magnetic switches. Alarm systems – A reed switch will be found in many alarm systems for sensing whether doors and windows are open or closed.
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