E90-DTU(230SL37) LoRa Data Radio military-grade LoRa modulation technology Data transceiver
[Frequency]：220.125~236.125MHz
[Power]：37dBm
[Distance]：20km
[Interface]：RS232/RS485
[Weight]：253±5g
[Introduction]：E90-DTU (230SL37) is a data transceiver with military-grade LoRa modulation technology. With multiple transmission modes, it works in the (230.125MHz~236.125MHz) frequency band (default 230.125MHz). The transceiver provides transparent RS232/RS485 interface and supports 10～36V voltage input.
| Pin No. | Name | Function | Description |
|---|---|---|---|
| 1 | DB-9 femal socket | RS-232 interface | Standard RS-232 interface |
| 2 | 3.81 connecting terminal | RS-485, power interface | Standard RS-485 interface and pressure line power interface |
| 3 | PWR-LED | Power LED | Red when powered-on |
| 4 | TXD-LED | Transmit LED | Yellow, it flashes when transmitting data |
| 5 | RXD-LED | Receive LED | Yellow, it flashes when receiving data |
| 6 | DC power interface | Power interface | Straight hole, outer diameter: 5.5mm, inner diameter: 2.5mm |
| 7 | DIP switch | DIP switch | Working mode control |
| 8 | Antenna interface | SMA-K interface | External thread hole.L: 10mm. 50Ω resistance. |