User Manual—Version 3.0 Tunnel Master
Jr. Communication and Keypad Installation
January 2016 81
Electrician must run a single-twisted pair, 12AWG shielded Comm cable
(can be purchased from ICS) through the above 3/4” conduit from the first
Entrance Keypad to the second Entrance Keypad.
There is a terminal block (NETWORK 485), located on each of the
keypad
circuit boards labeled with DT+, DT-, and GND, for Data+, Data- and
Ground, respectfully. Terminations for the single-twisted pair Comm wires
should be torqued to 20 pound inches (2.3 n-m.) Over torquing may cause
enclosure breakage.
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