LINE JACK UNIT No. 1
Single outlet, single circuit surface mounting LJU.
Smaller than 2/- LJU, some versions have front plate with no screw fixings (squeeze sides to release).

Size = 50mm x 50mm x 25mm.

1/1A = Master (has ringing capacitor, Line test resistor & lightning protector)
1/2A = PBX master
1/3A = Secondary
 
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Last revised: October 30, 2022

FM