HIKVISION DS-2TD4166-25/V2, Quick Start Manual, Page: 9 / 31

Thermal Network Speed Dome Quick Start Guide
3
V
ID
EO
RED
AC
24V
YEL
LOW
/GR
EEN
BLA
CK
A
C24
V
YE
LLO
W
R
485
-
OR
AN
GE
R
485
+
Power Cable
RS485-
RS485+
Video Cable
Alarm Inputs
Network Cable
Alarm Outputs
Audio Input / Output
Figure 2-2
Cables of Thermal Speed domes
2.3
Alarm In/Out Connections
This section is only for the speed dome with alarm in/out functions.
The speed dome can be connected with alarm inputs (0~5VDC) and alarm outputs. Refer
to the following diagrams for alarm output:
JQC-3FG
Relay
30VDC
GND OUT
L N
～
220V AC
Thermal speed
Dome
Relay Output
(10A 250VAC )
Diagram (left) Diagram (right)
1A
OUT(n)
OUT(n)
+
-
DC
DC Load
Thermal Speed
Dome
Relay Output
OUT(n)
OUT(n)
Figure 2-3
Alarm Out Connections
The alarm provides the relay output (no voltage), and the external power supply is
required when it connects to the alarm device.

For DC power supply (left diagram), the input voltage must be no more than 30VDC,
1A.

For AC power supply, the external relay must be used (right diagram) to prevent
damages to the speed dome and avoid risk of electric shock.