[Introduction]：E90-DTU(400SL42) is a real high-quality industrial-grade wireless data transmission radio. The radio adopts LORA spread spectrum technology. Its strong anti-interference ability makes wireless communication more stable and reliable in industrial sites. It has a variety of transmission methods, works in the (410.125～493.125MHz) frequency band (default 433.125MHz), and the radio station provides a transparent RS232/RS485 interface. LoRa direct-sequence spread spectrum technology will bring a longer communication distance and has the advantage of strong anti-interference ability. The module has a software FEC forward error correction algorithm, which has high coding efficiency and strong error correction ability, greatly improving reliability and transmission distance. The radio has the function of data encryption; it supports the setting of packet length, and supports different real-time and data packets.
|Model Specifications||Working frequency (Hz)||Transmitting power (W)||Reference distance (km)||Specifications||Recommended Application Scenarios|
|E90-DTU(400SL42)||433.125M||15||30||LoRa spread spectrum anti-jamming||Suitable for long-distance, interference-prone environments|
Note: Sunny weather, open environment without shelter, 12V/4A power supply, 5dBi suction cup antenna, the height of the antenna from the ground is 2 meters, and the factory default parameters are used.
|1||Product Size||124*109.1*35.2mm||See installation dimensions for details|
|2||product weight||425g||Weight tolerance 5g|
|3||Operating temperature||-40℃～+85℃||Meet the needs of industrial use|
|4||Antenna Impedance||50Ω||Standard 50Ω characteristic impedance|
|5||voltage range||12±1VDC||It is recommended to support instantaneous current 4A|
|6||Communication Interface||RS232/RS485||Standard DB9 socket/5.08 terminal blocks|
|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|
Frequency range and number of channels
|Model Specifications||Default frequency (Hz)||Frequency range (Hz)||Channel spacing (Hz)||number of channels|
|E90-DTU(400SL42)||433.125M||410.125～493.125M||1M||84, half duplex|
Note: In the same area, multiple sets of digital radios are used for one-to-one communication at the same time. It is recommended that each set of digital radios be set with a channel interval of more than 2MHz.
Transmit power level
|E90-DTU(400SL42)||Software adjustable, default 15W|
Air Speed Class
|Model Specifications||Default air rate (bps)||number of grades||Air rate class (kbps)|
|E90-DTU(400SL42)||2.4k||8||0.3, 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 62.5|
Note: The higher the air speed setting, the faster the transmission rate and the shorter the transmission distance; therefore, if the speed meets the requirements of use, it is recommended that the air speed be as low as possible.
|Model Specifications||Supply voltage (V)||Emission current (A)||Waiting current (mA)|
Send and receive length and subpackage method
|Model Specifications||cache size||Subcontracting|
|E90-DTU(400SL42)||1000 bytes||Subpackage 32/64/128/240 bytes can be sent by command setting|
Note: 1. If the single data received by the station is greater than the capacity of a single packet, the excess data will be automatically allocated to the second transmission until the transmission is completed;