Chamberlain ART300 series Mechanical Installation Instructions page 69

WIRING DIAGRAM
PE
PE
LYN/SCS
SUB
Model
203285
+ -
230VAC
external
Model
battery
CM475
50
RADIO MODULE
+ + +
Relay
Closed position
ART
8.2
Ω
+ +
+
+
+
+
+
5/16 en