DoorKing 2112 - Cellular or Internet Connection Setup; Grounding and Surge Suppression

2112-065-G-12-21
10
2.2 Cellular OR Internet Connection
Sound Card
Built-In
Video
DISPLAY
HDMI
A/V
PWR IN
CAMERA
ETHERNET
USB
USB
Raspberry Pi 3
Model
B
Cat5
Ethernet
USB
HDMI
US
B
S
OUND CAR
D
P
OWE
R
MU
T
E/REC
To Your
Router
connected
to the
Internet
Cat5 Cable
325 ft Max.
USB Cable
As short as
possible
OR
USB
Cellular
Module
2.3 Grounding and Surge Suppression
Proper Grounding and the use of surge suppressors can significantly reduce the chance of component failure because of static charges or
surges. To be effective, ground connections should be made with a minimum 12 AWG wire to a ground point within 10 feet of the device
being protected. The ground point can be at an electrical panel, a metallic cold water pipe that runs in the earth or a grounding rod driven at
least 10 feet into the soil. A gooseneck mounting post anchored in concrete does NOT make a good ground.
Low Voltage Surge Suppressor
It is highly recommended that a low voltage surge
suppressor (DoorKing P/N 1878-010) be installed to help
protect the telephone entry system from power surges.
Surge suppressor must be positioned 3 ft or less from the
ground source, 12 AWG min.
Some Acceptable Ground Sources
Ground to metallic cold water pipe.
Ground
Wire
Ground
Wire
Transformer
Ground to existing electrical system.
Electrical
Panel
Grounding rod 10 feet in soil.
2112
Surge suppressor within
3 ft of ground source.
POWER LINE
1878-010
Surge suppressor
within 10 ft of 2112.
0
0
4
4
5
5
6
6
1
1
2
2
3
3
7
7
8
8
9
9
Optional External Cellular Module Kit
Optional Internal Cellular Module Kit
Cat5 Cable
IMPORTANT: Ground wire shown without
safety protection for clarity. Make sure
ground wire is protected from being
touched or electrical shock could occur!