Operation Manual

4.4.4. Alarm I/O Connection
Alarm Connection for GRI-K1104A and GRI-K2208A:
Connecting the alarm input signal :
Connect the signal line of an alarm input device such as a sensor to the rear [ALARM IN] port.
1. While pressing and holding the [A1] or [A2] port button in the rear bottom of the NVR, insert the alarm signal
cable into the hole under the button.
2. Insert the grounding wire into the [GND] port.
3. To ensure a secure connection, release the button and try to pull the wire to check if it is firmly seated in the
port.
4. To remove the wire, pull it out while holding the upper button.
Connecting the alarm output signal :
Connect the signal line of an alarm output device to the rear [ALARM OUT] port.
1. Check the relay output type of Normal Open or Normal Close before selecting a proper type (N/O or N/C). While
holding the [N/O] or [N/C] button, put the alarm signal cable into the hole under the button.
- N/O (Normal Open) : Normally Open but switches to Close if an alarm out occurs.
- GND : Insert the grounding wire.
- N/C (Normal Close) : Normally Close but switches to Open if an alarm out occurs.
2. Insert the grounding wire in the [GND] port.
3. To ensure a secure connection, release the button and pull out the wire to check if it is not pulled out.
4. To remove the wire, pull it out while holding the upper button.
Alarm Connection for GRI-K4416A:
Connecting the alarm input signal :
Connect the signal line of an alarm input device such as a sensor to the rear [ALARM IN] port.
1. Loosen the screws on both the alarm input port and the[GND] port of the provided terminal block plug.
14
English