Normally open door contacts

Free delivery and returns on all eligible orders. 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. There are two types of reed switches: normally open reed switches and normally closed reed switches. Heavy duty magnetic contacts are also available for roller shutter and up-and-over garage doors.

We manufacture the simple pencil flush, normally open door contact , the quickfit, speedfit terminal based and potted versions, all as standard.

Please contact us to discuss any requirements you cannot find elsewhere.

FREE DELIVERY possible on eligible purchases.

Set includes magnet and proximity switch. Recommendations in application: wooden door , window. Mounting method: SMD (by screws or double-sided tapes).

A magnet and reed switching sensor for burglar alarms, normally to be recessed into doors or windows and their frames. One part contains the magnet while the other part contains the reed switch , which is normally closed in the presence of the magnet. FOR DOOR OR WINDOW MOUNTING SECURITY APPLICATIONS BOTH SWITCH AND MAGNET ARE HOUSED IN FULLY SEALED ABS MOULDINGS AND CAN BE MOUNTED EITHER BY INTEGRAL SELF-ADHESIVE PADS, OR BY SCREW MOUNTING HOLES AT EACH END THE CONTACT IS NORMALLY OPEN , . Haegil supply magnetic contacts for normally closed circuits primarily used for premises and home alarm security systems as well as normally open circuits for vehicle . If you do require contacts for double doors, then . However, an electrician would consider that same contract to be normally open. The beauty of the 944-2GY contact is that it . Lead (three) white (common port), gray (N.C.), brown (N.O.). See what Grainger has to offer in the way of magnetic contacts to help keep your buildings and controlled access areas secure.

Box contains an “ammo belt” of individually packaged magnetic contacts complete with screws, spacers and covers. Simply tear off the perforated . Protect wooden windows and doors with the supplied reed switch and magnet. 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 . When the magnet is less than 13mm () away, . Normally open circuits close when the magnet engages.