ADEMCO 7720PLUS Installation Instructions Manual page 9

Trigger voltage outputs: A current-limited source of approximately 12 volts DC is available at pin 3
of the terminal block, for external contacts, etc., that require a pullup voltage.
NOTE: Use color-coded wires for the power connections; it is recommended that the positive connection
be red and the negative connection be black.
Wiring At The Control Panel
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Connect the negative wire to the system negative point, which is also the negative line from the
battery.
Run the alarm wires to the transmitter location.
Wiring For ECP Communication with a Control Panel
Only certain panels support ECP data communication at this time.
Instructions of your panel to see if Long Range Radio is supported.
ECP data connections are the Data In and Data Out terminals that the keypads and other peripheral
devices (RF Receiver, VIP module, etc.) use for communication with the panel. To wire the radio for
ECP communication, do the following:
Connect TB1-4 (Ground) of the 7720PLUS to the ground of the panel.
Connect TB1-5 (ECP DATA IN) of the 7720PLUS to "data out to consoles" connection on the panel.
Connect TB1-6 (ECP DATA OUT) of the 7720PLUS to "data in from consoles" connection on the panel.
Note: add ground wire to drawing below. (See page 10a)
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