Manual

22
I/O Connections
Alarm Output
One alarm output using 200MA is provided to drive external alarm units. If you expect to drive a device with higher power, connect an external
electrical appliance, as shown in the following figure.
RS232/RS485 Device Connection
The 24-pin connector on the MDVR provides two RS232 serial ports, to which a
user can connect the desired sensor, OBD and two-way radio supporting RS232
according to actual requirements.
1. Connect the power cord and communication cable of the external device to
the supplied 24pin I/O port, and then to 24PIN I/O port on the rear panel of
the vehicle MDVR.
2. Install the probe for the external device.