56 (119) Telephone Access System Installation and Operation Manual Version 3.7
LT-969 Copyright January 2017
Lobby Control Unit Setup
4.3.3 AC or DC Input Door Strike Supply
The power for the door strike is customer supplied and provides AC or DC power
for one of the door strike outputs.
Note: The controller is able to convert an AC supply to a DC output. The
reverse is not true. Consequently, an AC door strike will not work
with a DC power supply.
The maximum supply for the AC or DC Input Door Strike must not exceed:
• 28 VAC / 1 A max
• 30 VDC / 1 A max
4.3.4 AC Output Door Strike
The AC Output Door Strike receives power from the AC Input Door Strike
supply. The AC power output remains the same as the power supplied to the AC
Input Door Strike.
The AC Output Door Strike is configured for activation by the resident’s
telephone keypad.
4.3.5 DC Output Door Strike
The DC Output Door Strike receives power from the AC or DC Input Door Strike
supply and is configured for activation by the resident’s telephone keypad. When
using a DC input supply, the DC power output remains the same as the input.