
Digital Network Video Surveillance System
Material of the
touch
Silver
Rating(Resist
ance Load)
Rated switch capacity 30VDC 1A, 125VAC 0.3A
Maximum switch power 62.5VA 30W
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
1500VAC (10×160us)
Length of open
time
3ms max
Length of close
time
3ms max
Longevity
Mechanical 50×106 times (3Hz)
Electrical
100×103 MIN 1A 30VDC(0.5Hz)
100×103 MIN 0.3A 125VDC(0.5Hz)
Temperature -40 ~+85 ℃ ℃
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.
The series DVR also support NKB operation. You can operate the DVR from the keyboard controls instead of
using the control pad on the front panel of the unit.
To connect a NKB keyboard to the DVR:
1. Assemble the KBD keyboard according to the instructions in its accompanying installation manual.
2. Connect the KBD keyboard into one of the RS232 ports on the DVR or through network.
RS485
When the DVR receives a camera control command, it transmits that command up the coaxial cable to the PTZ
device. RS485 is a single-direction protocol; the PTZ device can’t return any data to the unit. To enable the
operation, connect the PTZ device to the RS485 (A,B) input on the DVR. See Figure 3-14.
Since RS485 is disabled by default for each camera, you must enable the PTZ settings first. This series DVRs
support multiple protocols such as Pelco-D, Pelco-P.
To connect PTZ devices to the DVR:
1. Connect RS485 A,B on the DVR rear panel.
Unisight Digital Technologies, Inc.
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