10 Pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System ow

10 Pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System ow. There are two types of reed switches: "normally open" reed switches and "normally closed" reed switches. A normally-closed reed switch is closed when it is not near a magnet; as a magnet is brought close to it, a normally-closed switch will open.. Condition:: New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is applicable). If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. See the seller's listing for full details. See all condition definitions : Brand: : Unbranded , MPN: : Does not apply: UPC: : Does not apply , EAN: : Does not apply , 。

10 Pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System ow
10 Pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System ow
10 Pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System ow

10 Pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System ow