rickvr6

Yes I was going to get a psu which has battery back up and power both expanders.

First alarm I've done so don't understand what don't common the positives mean. It's got 2 expanders on already so was just going to put a 2amp psu on.

Sorry it's a texecom premier 48 elite and pirs are texecom pristige TD and DT.

Just installed an alarm at home but think I need a psu. It's got 3 rkp's, 1 bell and about 16 pirs also a wireless receiver. Need help on how to connect a psu.thanks