Systemconfigurations
Models3911and3912Models3911and3912havewindowedpanelsonthelattices.Model3911hasasinglecorridor,whereasModel3912
hastwocorridors.
Fuses&voltage
selector
Keyswitch
Power
receptacle
Electronics
enclosure
Power
receptacle
Power
cord
Photocell
Alarm
Alarmlights
A
B
Fuses&voltage
selector
Photocell
Alarmlights
A
B
C
Power
cord
3900GrCorridorOverviewwithPanels
Counter
Alarm
Model391 1single-corridorsystem
Model3912dual-corridorsystem
Counter