IC Realtime Combo Series: 8 Channel DVR with built-in 10 LCD monitor - Manual (Page 29)

20
z Please connect the NC port of the alarm sensor to the 10.2-inch combo DVR alarm
input(ALARM)
z Use the same ground with that of 10.2-inch combo DVR if you use external power to the
alarm device.
Figure 3-9
3.9.3 Alarm Output Port
z 1-channel relay alarm output (NO contact). Provide external power to external alarm device.
z To avoid overloading, please read the following relay parameters sheet carefully.
z RS485 A/B cable is for the A/B cable of the PTZ decoder.
Relay Specification
Model:
JRC-27F
Material of the
touch
Silver
Rated switch capacity 30VDC 2A, 125VAC 1A
Maximum switch power 125VA 160W
Maximum switch voltage 250VAC, 220VDC
Rating
（
Resistance
Load）
Maximum switch currency 1A
Between touches with same
polarity
1000VAC 1minute
Between touches with different
polarity
1000VAC 1minute
Insulation
Between touch and winding 1000VAC 1minute
Surge voltage
Between touches with same
polarity
1500V (10×160us)
Length of open
time
3ms max
Length of close
time
3ms max
Mechanical 50×106 times (3Hz)
Longevity
Electrical 200×103 times (0.5Hz)
Temperature -40℃ ~+70℃
3.10 RS232
You can connect the 10.2-inch combo DVR with POS or Keyboard through RS232.