[Frequency] : 425~450.5MHz
[Power] : 33dBm
[Distance] : 4.0km
[Interface] : RS232/RS485
[Introduction] : E61-DTU-433C33 is a high-speed wireless transceiver with both RS232 & RS485 interfaces working at 425 ~ 450.5MHz. It supports continuous data transmission with limitless data packet length.
| RF Parameter | Value | Remark |
| Working frequency | 425~450.5 MHz | Default: 433MHz |
| Transmitting power | 33 dBm | About 2W |
| Receiving sensitivity | -126 dBm | Air data rate: 1.2kbps |
| Air data rate | 1.2k~70kbps | Self-adapted baud rate |
| Test distance | 8000 meter | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 1.2kbps |
| 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 | 256 bytes buffer | Automatically sub-packaging with 77 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 10 | 12 | 28 | V | |
| Transmitting current | 844 | 938 | 1031 | mA | 33dBm（2W） |
| stand-by current | 13 | 14 | 15 | 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 |
| Model | IC | Interface | Frequency Hz | Power dBm | Distance km | Air Rate(bps) | Package | Size (mm) | Feature | Manual | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E61-DTU(433C33) | 232/485 | - | 433M | 33 | 4.0 | 1.2k~70k | Screwing/DB9 | 82*62*25 | Continuous transmiss | ||
| E61-DTU(433C37) | 232/485 | - | 433M | 37 | 10 | 1.2k~70k | Screwing/DB9 | 124*105*25 | Continuous transmiss | ||
| E61-DTU(230C27) | 232/485 | - | 230M | 27 | 2.0 | 16k~128k | Screwing/DB9 | 82*62*25 | Continuous transmiss | ||
| E61-DTU(433C17) | 232/485 | - | 433M | 17 | 1.0 | 1.2k~70k | Screwing/DB9 | 82*62*25 | Continuous transmiss | ||
| E61-DTU(433C30) | 232/485 | - | 433M | 30 | 2.5 | 1.2k~70k | Screwing/DB9 | 82*62*25 | Continuous transmiss | ||
| E61-433T17D | UART | - | 433M | 17 | 1.0 | 1.2k~70k | DIP | 21*36 | Continuous transmiss | ||
| E61-433T30D | UART | - | 433M | 30 | 2.5 | 1.2k~70k | DIP | 24*43 | Continuous transmiss |
