[Introduction]：E90-DTU (400SL47) is a truly high-quality industrial-grade wireless data transmission radio (the radio won the national design patent ZL202030009845.3). The radio uses LORA spread spectrum technology, and its strong anti-interference ability allows wireless communications to be used in industrial sites. More stable and reliable. It has a variety of transmission methods and works in the (410.125~460.125M) frequency band. The radio station provides a transparent RS232/RS485 interface. The radio has a data encryption function. The data transmitted by the radio in the air is random. Through strict encryption and decryption algorithms, data interception is meaningless. It supports packet length setting and supports different real-time properties and data packets.
| Model specifications | Working frequency (Hz ) | Transmit power (W ) | Reference distance (km ) | Specifications | Recommended application scenarios |
| E90-DTU(400SL47) | 433.125M | 50 | 70 | LoRa spread spectrum anti-interference | Suitable for environments with long distances and susceptible to interference |
Note: Sunny weather, open environment without obstruction, 12V/10A power supply, 5dBi suction cup antenna, the antenna is 2 meters above the ground, and the factory default parameters are used
| Serial number | Project | Specification | illustrate |
| 1 | Product Size | 160*137*44mm | See installation dimensions for details |
| 2 | product weight | 846.2g | Weight tolerance 4.5g |
| 3 | Operating temperature | -40℃～+85℃ | Meet industrial grade use requirements |
| 4 | Antenna impedance | 50Ω | Standard 50Ω characteristic impedance |
| 5 | voltage range | 12V DC | It is recommended to support instantaneous current 10A |
| 6 | Communication Interface | RS232/RS485 | Standard DB9 female/5.08 terminal block |
| 7 | baud rate | Factory default 9600 | Baud rate range 1200～115200 |
| 8 | Address code | Factory default 0 | A total of 65536 address codes can be set |