Introduction; Brief Introduction; Certificate(Consistent With E90 Series); Features - Ebyte E90-DTU User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

1. Introduction

1.1 Brief introduction

E90-DTU (2G4L27) is a data transceiver with military-grade LoRa modulation technology. With multiple transmission
modes, it works in the (2400MHz~2500MHz) frequency band (default 2424MHz). The transceiver provides transparent
RS232/RS485 interface and supports 8～28V voltage input. LoRa direct-sequence spread spectrum technology will bring
longer communication distances, and has the advantages of concentrated power density and strong anti-interference
ability. It features a software FEC forward error correction algorithm, which has high coding efficiency and strong error
correction capability. In the case of sudden interference, it can proactively correct the interfered data packets, greatly
improving reliability and transmission distance. In the absence of FEC, such packets can only be discarded. It has data
encryption. The data transmitted by the transceiver over the air is random, and the data interception is meaningless
through strict encryption and decryption algorithms. Packet length setting is available to support different real-time and
data packets.
As a communication medium, wireless data transceiver has the same scope as optical fiber, microwave and bright line: it
provides real-time and reliable data transmission of monitoring signals in private networks under certain special
conditions, with low cost, installation and maintenance. It is convenient, has strong diffraction ability, flexible
networking structure and long coverage. It is suitable for occasions with many points and scattered, complex
geographical environment, etc. It can be connected with PLC, RTU, rain gauge, liquid level meter and other data
terminals.

1.2 Certificate(Consistent with E90 series)

E90-DTU is certified with CMIIT ID:2017FP5780 by SRRC.
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E90-DTU is certified with "Certificate of conformity on explosive application protection"，ID: 201711000975.
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E90-DTU is certified with "Electrostatic surge test report" by National Institute of Measurement and Testing

Technology，ID： CNEx18.1461.
E90-DTU is certified with "Certificate of Design Patent"，Patent Number： ZL 2016 3 0501980.3.

E90-DTUis certified with "Utility model patent certificate"，Patent Number： ZL 2016 2 1410691.3.
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E90-DTU is certified with "CE" , ID： CCISE180514601V.
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E90-DTU is certified with "FCC", ID： 2ALPH-E90-DTU.
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E90-DTU is certified with "RoHS"，ID： DTI201807025245.
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1.3 Features

Using the latest LoRa technology;
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Using military-grade LoRa modulation technology, with data encryption;
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Simple high-efficiency power design, support power supply configuration or pressure line mode,8 ~ 28V power;
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The transmit power is up to 27dBm,multi-level adjustment,all technical indicators meet European industrial

standards;
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E90-DTU （2G4L27） User Manual
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