Dahua HCVR8204A-S3 - Change DVR Button Battery

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Model
HFD23/005-1ZS
HRB1-S-DC5V
switch power
Maximum
switch voltage
125V AC/60V DC
125V AC/60V DC
Maximum
switch
currency
2A
2A
Insulation
Between
touches
400VAC 1 minute
500VAC 1 minute
Between touch
and winding
1000VAC 1 minute
1000VAC 1 minute
Turn-on Time
5ms max
5ms max
Turn-off Time
5ms max
5ms max
Longevity
Mechanical
1×10
7
times
(300 times/MIN）
5×10
6
times
(300 times/MIN）
Electrical
1×10
5
times
(30 times/MIN）
2.5×10
4
times
(30 times/MIN）
Working Temperature
-30℃～+70℃
-40℃～+70℃
3.8 Change DVR Button Battery
Please make sure to use the same battery model if possible.
We recommend replace battery regularly (such as one-year) to guarantee system time
accuracy.
WARNING
Before replacement, please save the system setup, otherwise, you may lose the data
completely!
3.9 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.
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.
2. Connect the other end of the cable to the proper pins in the connector on the camera.
3. Please follow the instructions to configure a camera to enable each PTZ device on the
DVR.