8
1.3.3 Connecting to GV-DVR/NVR and Third-Party Access
Controllers
GV-Reader1251 / 1352 V2 / SR1251 is also compatible with third-party access controllers.
With its compatibility, you can also add a GV-DVR/NVR to this connection to empower your
management.
After connecting the GV-Reader1251 / 1352 V2 / SR1251 to the access controller through
the Wiegand interface, connect the reader to GV-DVR/NVR via GV-COM, GV-Hub or GV-
NET/IO Card V3.1.
Note: The GV-Reader1251 / 1352 V2 / SR1251 is not compatible with the GV-NET Card
and the GV-NET/IO Card of versions earlier than V3.
(Light blue) -
GV-System
GV-COM / GV-Hub /
GV-NET/IO Card V3.1
Acces s Controller
(third-party)
(power supply: 7.5~12 V)
(Red)
(Black)
(Blue) +
USB
(Green)
(White)
GV-Reader
GV-Reader
Switch Setting (GV-Reader1251 / 1352 V2 only)
1 2 3 4 5 6
7 8
ON
ECE
SW4 must be turned OFF.
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