Can a vista-20p be installed by someone else?
Can a vista-20p be installed by someone else? Most alarm companies change the default installer code of [4112] to something different and they do not provide you with the installer code, so if your VISTA-20P was installed by someone else, you will most likely need to use the "backdoor" programming method. How do I connect my Vista 20p alarm? With the connections made, open the Compass software and setup an account for your VISTA-20P alarm control panel. Open the account, go to "communications", hit the connect button, and choose "Initiate from Telco" then click "Connect". The Compass software will generate...