E32 Series LoRa Terminal E32-DTU(433L20)
E32-DTU(433L20)
[Frequency] : 410~441MHz
[Power] : 20dBm
[Distance] : 3.0km
[Interface] : RS232/RS485
[Weight] : 127±5g
[Introduction] : E32-DTU (433L20) is a 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 | 20 dBm |
About 100mW |
| Receiving sensitivity | -138 dBm |
Air data rate: 2.4kbps |
| Air data rate | 0.3k~9.6kbps |
Default: 2.4kbps |
| Test distance | 3000 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 |
82 * 62 * 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 |
10 | 12 | 28 | V | |
| Transmitting current | 120 | 134 | 147 | mA | 20dBm（100mW） |
| stand-by current | 25 |
28 | 31 | 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 connector |
RS-232 connector |
Standard RS-232 connector |
| 2 | 3.81 wiring connector | RS-485, power connector |
Standard RS-485 connector and line-pressing power source connector |
| 3 | PWR-LED | Power source indicator |
Red, light on when power on |
| 4 | TXD-LED | TX indicator |
Yellow, flicker when transmitting data |
| 5 | RXD-LED | RX indicator |
Yellow, flicker when receiving data |
| 6 | DC power connector | Power source connector |
Drop-in round hole, 5.5mm external diameter, 2.5mm internal diameter |
| 7 | Toggle switch | Toggle switch |
Operation mode control |
| 8 | Antenna interface | SMA-K connector |
External screw and inner hole, 10mm long, 50Ω characteristic impedance |
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