IC Realtime Specialty: Interrogator DVR - a DVR for law enforcement - Manual (Page 26)

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Figure 3-8
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
3.8 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.