Peizo buzzer with Elk KP2 output as source

[mjpcomp]

I was looking at this from AO:
http://www.automatedoutlet.com/product.php?productid=868
Peizo buzzer w/ 20-30mA power draw...

The Elk KP2 has a programmable output rated at 50mA max.

Would it be possible to use this (105 dB will be plenty) with the keypad as the power source (don't want to cut and drill to run extra sets of lines for sirens downstairs).

4 to 5 of these (1/keypad) plus a siren (or two) in the attic should draw enough attention.

 

[Spanky]

The programmable output should drive your small piezo sounder. +12V and the output as the sounder negative. It has an open collector transistor that shorts to ground. Make sure the piezo sounder can take 12 VDC.