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Extra Siren


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Hi

I would like to add an extra siren to my alarm system, I already have a pyronix belle which draws approximately 420 ma and I believe the maximum power output for my panel is 1280 ma approximately, however I have a elmdene 1 amp 12v psu just powering smoke detector so I would like to wire the siren trigger from the main panel and take the power from the psu but in theory it shouldn't work as it is not completing a circuit so I would need to know if it's possible to take the + and - from the psu then add a relay and wire it from the bell trigger cable to switch when the alarm is triggered, so the positive and negative wire into the relay and the positive stays connected but I only switch the negative in full alarm? Is this possible?

Thanks in advance

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I know the Pyronix Belle well and you will find is more like 500mA.

PSU would be required unless you use SCB mode.

You shouldn't have a system running anywhere near it's maximum output.

 

You will need to common the negatives from the PSU's and also consider how you will get the tampers to work together.

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