MDVR has 8 alarm input and 2 alarm output. Alarm input works to inspect the electrical level, it can
detect different signals of the vehicle, like braking, turning direction, etc. Please see the diagram below
to simulate the working mode. When you press the brake, the MDVR will detect the high level pulse,
otherwise, it detects the low level pulse.
Alarm output is level output with 200mA drive capability. If user wants to drive a device of large
power, an external relay is needed.
Following is the diagram of alarm output::
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