E32 Series LoRa Terminal E32-DTU(433L37)
E32-DTU(433L37)
[Frequency] : 410~441MHz
[Power] : 37dBm
[Distance] : 20km
[Interface] : RS232/RS485
[Weight] : 259±5g
[Introduction] : E32-DTU (433L37) is wireless data transceiver of 433M with standard RS232/RS485 connectors. They are half-duplex. TX & RX modems with LoRa technology and transparent transmission mode. Voltage supply ranges from 8V to 28V, Working frequency
| Model | Interface | IC | Frequency Hz | Power dBm | Distance km | Air data rate | Package | Size (mm) | Feature | Manual |
| E32-DTU(433L27) | 232/485 | SX1278 | 433M | 27 | 5.0 | 0.3k~9.6k | Screwing/DB9 | 82*62*25 | LoRa spread spectrum | ✔ |
| E32-DTU(433L37) | 232/485 | SX1278 | 433M | 37 | 20 | 0.3k~9.6k | Screwing/DB9 | 124*105*25 | LoRa spread spectrum | ✔ |
| E32-DTU(433L20) | 232/485 | SX1278 | 433M | 20 | 3.0 | 0.3k~9.6k | Screwing/DB9 | 82*62*25 | LoRa spread spectrum | ✔ |
| E32-DTU(433L30) | 232/485 | SX1278 | 433M | 30 | 8.0 | 0.3k~9.6k | Screwing/DB9 | 82*62*25 | LoRa spread spectrum | ✔ |
| E32-DTU(868L20) | 232/485 | SX1276 | 868M | 20 | 3.0 | 0.3k~9.6k | Screwing/DB9 | 82*62*25 | LoRa spread spectrum | ✔ |
| E32-DTU(868L30) | 232/485 | SX1276 | 868M | 30 | 8.0 | 0.3k~9.6k | Screwing/DB9 | 82*62*25 | LoRa spread spectrum | ✔ |
| RF Parameter | Value |
Remark |
| Working frequency |
410~441 MHz |
Default: 433MHz |
| Transmitting power | 37 dBm |
About 5W |
| Receiving sensitivity | -130 dBm |
Air data rate: 2.4kbps |
| Air data rate | 0.3k~9.6kbps |
Default: 2.4kbps |
| Test distance | 20000 meter |
In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 2.4kbps |
| Hardware Parameter | Value |
Remark |
| Size |
124 * 105 * 25 mm |
- |
| Antenna type | SMA-K |
- |
| Communication interface | RS232 / RS485 |
Baud rate: 1200~115200, default: 9600 |
| Package | DB-9 / Screwing |
Standard DB9 Hole/3.81 connecting terminal |
| Buffer | 512 bytes buffer |
Automatically sub-packaging with 58 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply |
8 | 12 | 28 | V | - |
| Transmitting current | 945 | 1050 | 1155 | mA | 37dBm（5W） |
| Stand-by current | 40 |
44 | 49 | mA |
- |
| Operating temperature | -40 | 20 |
+85 | ℃ | - |
| Operating humidity |
10 | 60 |
90 | % | - |
| Storage temperature |
-40 | 20 |
+125 | ℃ | - |
| Pin No. |
Name | Function | Description |
| 1 | DB-9 female socket |
RS-232 interface |
Standard RS-232 interface |
| 2 | 3.81 terminal block | RS-485, power interface |
Standard RS-485 connector and line-pressing power source connector |
| 3 | PWR-LED | Power LED |
Red, light on when power on |
| 4 | TXD-LED |
TX LED |
Yellow, flicker when transmitting data |
| 5 | RXD-LED | RX LED |
Yellow, flicker when receiving data |
| 6 | DC power connector | Power interface |
Drop-in round hole, 5.5mm external diameter, 2.5mm internal diameter |
| 7 | DIP switch | DIP switch |
Operation mode control |
| 8 | Antenna interface | SMA-K interface |
External screw and inner hole, 10mm long, 50Ω characteristic impedance |
