26
Figure 3-7
3.8.3 Alarm Output Port
z
6 ways 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
For contro12V, it can be used to provide power to devices such as reset smoke sensor.
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
℃
3.9
RS232
You can connect the DVR with POS or Keyboard through RS232.
With POS system, the DVR can communicate through RS232 and network. For the POS system, the
DVR can integrate the text content and even search the record through the info.
Содержание DVR72XX-V
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