Reed Switch | For Door & Window Alarms | NO/NC 14x23mm PS-3150
This door and window sensor uses a simple reed switch and a magnet. It detects when an entry point opens. It's a key piece for building a wired home security system. The sensor has both Normally Open ...
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Questions about this product
- What does 'Normally Open/Closed (NO/NC)' mean for this switch?
- This switch has three terminals, giving you flexibility for different alarm systems. You can wire it as 'Normally Open' (the circuit is open until the magnet is present) or 'Normally Closed' (the circuit is closed until the magnet is moved away).
- What's the maximum gap I can have between the magnet and the switch?
- For reliable operation, you should install the two parts with a gap of 15mm or less. The sensor body itself measures 14mm by 23mm, making it compact enough for most door or window frames.
- Is this a complete wireless sensor, or do I need to run wires to it?
- This is a wired reed switch component, not a self-contained wireless sensor. You will need to run alarm cable from the switch's terminals back to your main alarm panel or a compatible transmitter.
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