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14. "Modem" - "VT770 / LTE, GPS modem" is ordered separately. Read instructions at "Connecting VT770 / LTE , GPS modem with GNSS", "Network: LAN, GSM, LTE, RADIUS, DNS, SSL, VPN".
- "Modem status" - LED displays modems status.
- "SIM card slot" - Open the top cover to insert a SIM card.
- "GSM, LTE main antenna" - Connect GSM or LTE main antenna.
- "LTE auxiliary antenna" - Connect LTE auxiliary antenna (Auxiliary LTE antenna and antenna output are ordered separately from the modem). It helps to establish a stronger and more stable signal.
- "GPS active antenna" - GPS antenna and antenna output are ordered separately from the modem. Allows to set the time using GPS and shows the location of the device on the map.
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| 1 |
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| 2 |  | Simply slide it inside the empty spaces until it clicks. |
| 3 |  | Use a screwdriver to pull it out. |
Using the table above, you can mount the cables.
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The system uses terminal blocks for several interfaces:
- x4 dry contact inputs
- x2 Electronic relay outputs
- x2 Isolated digital outputs
- RS-485 Modbus RTU
- Power supply input
They share the same characteristics.
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Terminal blocks
Step: 5.08 mm
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6 - 7 mm
0.23 - 0.27 in
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2.5 mm²
0.09 in²
#26 - #12 AWG
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Flat
3.5 mm
0.13 in
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Device configuration
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