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17
4 Installation and Wiring
This chapter introduces the wiring of the device.
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The alarm input port is connected with dry contact.
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Do not install devices in environments that have condensation, high temperatures, dust
corrosive substances and direct sunlight.
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If the device behaves abnormally after you turn it on, cut off the power supply at once and
unplug the network cable. Power on again after you finish resolving the issue.
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Installation should be done by professional teams. Do not disassemble or repair the device by
yourself to avoid damaging the device. Contact after-sales service if you need any help.
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The recommended installation height of the device is 1.6 m from the ground.
The VTH with a 7-inch screen
Figure 4-1 Port description
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