3. Installation
3.1 Precautions
Before installation, read the following guidelines carefully:
Before installation, ensure that the vehicle power supply has a negative ground with the voltage of 13.6±15% V.
Before installation, measure the length of screws protruding from the HM652 surface. During installation, drill
the holes on the vehicle according to the screw length to avoid damaging the vehicle wires or other components.
Use the antenna and power cord approved by the Company.
Use the mounting bracket approved by the Company. Otherwise, the accidental drop of the HM652 may injure
people in the vehicle.
Install the HM652 at a position where you can easily reach the front panel.
To facilitate wiring, keep sufficient space at the back of the HM652.
When replacing the fuse for the DC power cord, ensure the new fuse shares the same specification with the old
one.
If any other communication devices such as repeaters are near the HM652, keep the antenna of these devices at
least 10 meters away from that of the HM652.
3.2 Tools
electric drill
Phillips screwdriver
T20 torx screwdriver
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