Chapter 1 Product Description; Product Introduction; Features - Ebyte E90-DTU User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

Chapter 1 Product Description

1.1 Product introduction

E90-DTU (400SL30L) is a wireless data transmission radio
using military-grade LoRa modulation technology. It has a variety
of transmission methods and works in the (410.125~493.125MHz)
frequency band (default 433.125MHz). The radio provides RS485
and TTL two kinds of serial communication Port, support 8~28V
DC power supply or 4.2V lithium battery power input, support
reverse constant current charging;
The introduction of the Modbus RTU protocol can configure
the working mode of the digital radio through the configuration
register, which is convenient for customers to access their own
configuration system (HMI or SCADA software, etc.) through the
Modbus protocol for radio management, and provides the
convenience of a host computer that does not need to understand
the Modbus protocol. Configuration by users who do not understand the protocol;
Ultra-low power consumption design, the lowest standby current consumption is only 38uA, supports battery
power supply (3.7-4.2v) and reverse charging, and the radio integrates switch value acquisition (dry contact) and
switch value output (transistor) for remote acquisition control, and the device can provide power for low-power
sensors;
Multiple automatic polling commands can be configured to support automatic Modbus CRC check;

1.2 Features

 Using the latest LoRa technology, the distance is farther and the performance is more powerful than the
traditional LoRa digital radio;
 Using military-grade LoRa modulation technology, the transmission is more secure, and the packet length can
be configured;
 Oversized single packet, single packet supports up to 240 bytes, and adapts to Modbus protocol;
 Based on standard Modbus RTU design, it is convenient to access different configuration systems;
 Support a variety of serial communication ports (TTL and RS485) to facilitate access to sensors of different
protocols;
 Simple and high-efficiency power supply design, support power adapter or pressure line method, support DC 8
~ 28V wide voltage input;
 Support lithium battery power supply and reverse charging, and support battery voltage detection and low
battery feedback;
 The transmission power can reach up to 1W, and supports multi-level adjustment, and all technical indicators
meet European industrial standards;
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E90-DTU(400SL30L)_UserManual_EN
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