Home
>
E840-DTU(4G-02)E industrial 4g modem Grade fiberopticequipment 4G LTE Modem Modbus RTU to Modbus TCP Wireless Modem for M2m
[Introduction]：E840-DTU(4G-02)E is an industrial 4g modem developed for serial port devices and network servers to transmit data to each other through a network. It is an LTE-FDD/WCDMA/GSM wireless communication data transmission modem with diverse receiving functions, supporting LTE-FDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA, EDGE, and GPRS network
| Pin No. | Name | Description |
|---|---|---|
| 1 | RS232 | RS232 interface |
| 2 | 485_A | To connect the end A of other RS485 device |
| 3 | 485_B | To connect the end B of other RS485 device |
| 4 | GND | Ground |
| 5 | VCC | Power supply， 8~28V,12V or 24V is recommended |
| 6 | PWR | Power indicator |
| 7 | WORK | Blue: Receipt transceiver pin, when the network receives data or the serial port receives data (50ms high/10ms low)Green: device status indication pin, Low: The device is powered on to search for a SIM card 1800ms low, 200ms high: The device checks the correct SIM card and is attaching to the network; High: The device is attached to the network successfully; |
| 8 | NET | Green: Socket A link connection status indication pin High: Socket A is successfully connected to the network server; Low: Socket A is not successfully connected to the network server;Blue: Socket B link connection status indication pin High: Socket B is successfullyconnected to the network server; Low: Socket B is not successfully connected to the network server; |
| 9 | DC-IN | DC adaptor，8~28V, 12V or 24V is recommended |
| 10 | RST | Dip switch（downward，reset） |
| 11 | Restore | Dip switchAfter the radio is powered on normally, the Restore dials from top to bottom, and continues down for 3~10S, then from bottom to top. After the process is completed normally, the radio parameters will be restored to the factory settings and restartedimmediately. |
| 12 | SIM | SIMSIM card slot |
| 13 | ANT | Antenna （SMA-K，50Ω impedance） |