Tii 442 User Manual
Tii Equipment

INSERT THROUGH
THE GROUNDING 
PORT 
GROUNDING 
PORT 
GROUND WIRE 
TERMINATING 
SCREW 
INDICATOR 
LIGHTS 
GROUNDING 
PORT 
GROUNDING 
SCREW 
MOUNTING 
TAB 
AC PLUG 
RECEPTACLE 
P/N 92212101 • Rev E• 11/5/2008
Warranty: If this unit fails during the warranty period, contact tii customer service to authorize return. Unit may be returned prepaid.
Model 442 
Grounding Module with AC Outlet 
Installation Note
Description
1. The TII 442 Grounding Module with AC outlet
provides a ground connection point, a 15A AC 
outlet as well as a ground detection circuit. In 
a typical installation the TII 442 is plugged into 
a wall outlet and a ground connection is 
accomplished by terminating the grounding 
conductor through the grounding port (See 
Figure 1). 
Features
Installation
1. To secure unit with mounting tab, carefully
remove the cover plate screw and discard. 
Install the TII 442 into an AC power outlet and 
secure the unit to the outlet using the 
mounting tab screw supplied (See Figure 2). 
2. Indicator Lights:
a. Green Light On: indicates presence of
ground.
b. Green Light Off / Red Light On:
indicates problem with ground. Check 
system ground. 
NOTE: IF BOTH THE GROUND PRESENT 
LAMP AND GROUND NOT PRESENT LAMP 
ARE ILLUMINATED AT THE SAME TIME, THIS 
IS AN INDICATION THAT THERE IS A 
PROBLEM WITH THE ELECTRICAL WIRING 
SERVICING TO THE AC RECEPTACLE. 
Figure 1
