TheAlarmTech.com

Sounds like you did everything right, you might try replacing the RAI I've had them go out before but not often, a trick an est tech told me once is to download the main panel and not leave the download page and move to the next Ann download and on down the line till all are downloaded, it didn't ma...

Dev/line fault could be either the device or the line, odds are it not the device which leaves the wiring, my suggestion would be to take it down to one line and work with that, try reversing the known data in(polling voltage present) to the out and see if it maps,will it map up without the isolator...

I do have a copy of the program on my jump drive but no key to open it so can I download this paradox reader from the internet?
Thanks for your input

I'm wanting to replace a est2 sdu with a IO 500 I have the addresses and descripts ,need to see if there is a way to pull the serial numbers out without a key ,I really don't want to have to go to each device and pull it down.