The right voltage for a reliable alarm.

A power supply (PSU) makes sure your intruder alarm gets the correct voltage, so it works reliably.

How do I choose an alarm power supply?
  • Voltage: match the PSU output to your panel, expander or device.
  • Current: add up what everything on the supply draws, then pick a PSU rated above that total.
  • Standby battery: size it to the load, so the system runs in a power cut.
  • Other extras: see alarm accessories.

Not sure which you need? Call us on 01902 902251. We deliver to England, Scotland and Wales within 1–2 working days.

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Power Supplies

The right voltage for a reliable alarm.

A power supply (PSU) makes sure your intruder alarm gets the correct voltage, so it works reliably.

How do I choose an alarm power supply?
  • Voltage: match the PSU output to your panel, expander or device.
  • Current: add up what everything on the supply draws, then pick a PSU rated above that total.
  • Standby battery: size it to the load, so the system runs in a power cut.
  • Other extras: see alarm accessories.

Not sure which you need? Call us on 01902 902251. We deliver to England, Scotland and Wales within 1–2 working days.


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