Grundig GD-RN-CT8832N User Manual page 30

RS-485
KB
11 GND
12 Power supply
modules
13 Decoding board
Connector for RS-485 devices.
Connector for the keyboard.
Ground (needs to be connected when the NVR starts up).
Only one power supply module is provided by default. Two
power supply modules are optional for redundancy.
Not Available.
30 ENGLISH