[Frequency] : 2.4~2.505GHz
[Power] : 20dBm
[Distance] : 2.0km
[Interface] : RS232/RS485
[Weight] : 127±5g
[Introduction] : High-speed DTU E34-DTU-2G4D20 with RS232/RS485 interface， 8V~28V, operating at 2.4~2.518GHz features full-duplex, unlimited package length, concentrated power density, long transmitting distance & high data rate, transmitting and receiving at the same time. It supports data encryption & compression. File transfer is available.
| RF Parameter | Value | Remark |
| Working frequency | 2400~2505 MHz | Default: 2.4GHz |
| Transmitting power | 20 dBm | About 100mW |
| Receiving sensitivity | -102 dBm | Air data rate: 250kbps |
| Air data rate | - | Self-adapted baud rate |
| Test distance | 2000 meter | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 250kbps |
| 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 | 1024 bytes buffer | Automatically sub-packaging with 29 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 10 | 12 | 28 | V | |
| Transmitting current | 130 | 145 | 159 | mA | 20dBm（100mW） |
| stand-by current | 45 | 50 | 55 | 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 |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 【Alibaba】：https://www.alibaba.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| Model | IC | Interface | Frequency Hz | Power dBm | Distance km | Air data rate | Package | Size (mm) | Feature | Manual | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E34-2G4D27D | UART | nRF24l01+ | 2.4G | 27 | 5.0 | 250k~2M | DIP | 21*36 | Full duplex | ||
| E34-DTU(2G4H27) | 232/485 | nRF24L01P | 2.4G | 27 | 5.0 | 250k~2M | Screwing/DB9 | 82*62*25 | Frequency-hopping | ||
| E34-2G4H27D | UART | nRF24L01+ | 2.4G | 27 | 5 | 250k~2M | DIP | 21*36 | Frequency-hopping | ||
| E34-DTU(2G4D20) | 232/485 | nRF24L01P | 2.4G | 20 | 2.0 | 250k~2M | Screwing/DB9 | 82*62*25 | Full duplex | ||
| E34-DTU(2G4H20) | 232/485 | nRF24L01P | 2.4G | 20 | 2.5 | 250k~2M | Screwing/DB9 | 82*62*25 | Frequency-hopping | ||
| E34-2G4D20D | UART | nRF24L01P | 2.4G | 20 | 2.0 | 250k~2M | DIP | 21*36 | Full duplex | ||
| E34-2G4H20D | UART | nRF24L01+ | 2.4G | 20 | 2.5 | 250k~2M | DIP | 21*36 | Frequency-hopping |
