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1.3.3
Alarm Output Port
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Provide external power to external alarm device
•
To avoid overloading, please refer to the following relay parameters table
•
RS485 A/B cable is for the A/B cable of the PTZ decoder:
T+,T-,R+,R- are four-wire double duplex RS485 port: T+ T-: output wire; R+ R-: input wire
Relay Specifications
Model:
JRC-27F
Contact Material
Silver
Rating
(resistance load)
Rated switch capacity
30VDC 2A, 125VAC 1A
Maximum switch power
125VA 160W
Maximum switch voltage
250VAC, 220VDC
Maximum switch currency
1A
Insulation
Between touches with same
polarity
1000VAC 1minute
Between touches with
different polarity
1000VAC 1minute
Between touch and winding
1000VAC 1minute
Surge voltage
Between touches with same
polarity
1500V (10 x 160us)
Open time
3ms max
Close time
3ms max
Longevity
Mechanical
50 x 106 times (3Hz)
Electrical
200 x103 times (0.5Hz)
Temperature
-40°C to +70°C
DVR7800S-U Series Hybrid DVR User Guide
5