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E90-DTU(400SL42) LoRa digital radio remote communication, SX1268 wireless data transmission station, RS485/RS232 relay network

[Transmission power]:15W

[Communication distance]:30km

[Product size]:124*109.1*35.2mm

[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 SpecificationsWorking frequency (Hz)Transmitting power (W)Reference distance (km)SpecificationsRecommended Application Scenarios
E90-DTU(400SL42)433.125M1530LoRa spread spectrum anti-jammingSuitable 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.

serial numberprojectSpecificationillustrate
1Product Size124*109.1*35.2mmSee installation dimensions for details
2product weight425gWeight tolerance 5g
3Operating temperature-40℃~+85℃Meet the needs of industrial use
4Antenna Impedance50ΩStandard 50Ω characteristic impedance
5voltage range12±1VDCIt is recommended to support instantaneous current 4A
6Communication InterfaceRS232/RS485Standard DB9 socket/5.08 terminal blocks
7baud rateFactory default 9600Baud rate range 1200~115200
8address codeFactory default 0A total of 65536 address codes can be set

Frequency range and number of channels

Model SpecificationsDefault frequency (Hz)Frequency range (Hz)Channel spacing (Hz)number of channels
E90-DTU(400SL42)433.125M410.125~493.125M1M84, 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

Model Specifications10/15W
E90-DTU(400SL42)Software adjustable, default 15W

Air Speed Class

Model SpecificationsDefault air rate (bps)number of gradesAir rate class (kbps)
E90-DTU(400SL42)2.4k80.3, 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.

Current parameter

Model SpecificationsSupply voltage (V)Emission current (A)Waiting current (mA)
E90-DTU(400SL42)12±12.5~3.545

Send and receive length and subpackage method

Model Specificationscache sizeSubcontracting
E90-DTU(400SL42)1000 bytesSubpackage 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;