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Please follow this step-by-step guide for installing LTE Router Teltonika RUT240
Remove cover plate (5 screws, some older chargers was made without cover plate)
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2. Insert router on the upper rail. Connect router on power supply (red wire → V+, black wire →V-)
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3. Connect router and ARM board with UTP cable. Connect antennas and secure wires.
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4. Cover canals and screw cover plate back
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