Sensor Cable connection about Passenger Counter:
This 24 Pin cable is connected to Passenger.)
Sensor in1 access to the front door, counter access to the front door of the switch signal;
Sensor in2 pick the back door, the counter to get the back door of the switch signal.
If you set Low level- Open, only when the Sensor 1 and Sensor 2 were both triggered 12V can transfer the Passenger Data to MDVR via RS -232.
Otherwise, the passenger counter will count the number when the door was open.
Sensor Cable connection about Panic button.
This 24 Pin cable is connected to MDVR.)
There will be a panic alarm when the Sensor is triggered by 12V. So you could install the panic button between the Sensor 1 and 12V.