How Do I Install a 7847i on a Vista-20P Security System?
Use screws and wall anchors to wall-mount the unit. Insert an Ethernet cable into the device and connect the other end to your router. Shut the 7847i enclosure, reconnect power to the Vista 20P control panel, and voila! Installation complete.
come with a built-in phone dialer that is designed to communicate with your monitoring station. Moreover, you have the option of adding a cellular or internet communicator (like the 7847i) to create back-up lines of contact with your alarm monitoring station in case your copper telephone line is severed.
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Vista 20P Control Panel