Figure 3-10
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 50/60Hz
between touches with
different polarity
1000VAC 1minute 50/60Hz
Insulation
between touch and winding 1000VAC 1minute 50/60Hz
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 C ~+70 C
3.8 RS232
You can connect the DVR with Keyboard through RS232.
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:
31
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