Overview; Introduction; Features - Ebyte E70-DTU User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.
E70-DTU(433NW30) User
Manual

1. Overview

1.1 Introduction

E70-DTU(433NW30) is a star network system, working in the 433MHz band, and has RS232/RS485 interface options,
the module integrates coordinator and terminal, with two transmission modes: long distance and high speed. A
coordinator supports up to 200 nodes to communicate with it, bidding farewell to the polling protocol. All operations are
configured using industry standard AT commands, which greatly simplifies user operations and is suitable for a variety of
wireless communication networking scenarios.
As a communication medium, wireless digital transmission radio, like fiber optic, microwave, open wire, has a certain
scope of application: it provides real-time, reliable data transmission of monitoring signals in the special network under
certain special conditions, has the characteristics of low cost, easy installation and maintenance, strong bypass capability,
flexible network structure, and far coverage, suitable for many scattered points, complex geographic environments, etc.,
and can be used in conjunction with PLC, RTU, rain gauge, liquid level meter, etc., and can also be used as a
communication medium. It can be connected with PLC, RTU, rain gauge, liquid level meter and other data terminals.

1.2 Features

★ Multi-send and one-receive to achieve star self-organizing network (the technology was authorized by the National
Invention Patent), the maximum support for 200 nodes concurrently concurrent data, without polling;
★Support AT command;
★Support RS232/RS485, one of the two can be used;
★In coordinator mode, support broadcast transmission, short address transmission, long address transmission;
★Firmware integration of long distance mode, high speed rate mode, to adapt to a variety of different applications;
★Communication is encrypted with AES128 data encryption to ensure packet security and reliability;
★Carrier sense multiple access with collision avoidance (CSMA-CA);
★Single packet support up to 128 bytes, adapted to Modbus;
★Simple and efficient power supply design, support power adapter or crimping method, support 10～28V power supply;
★Transmit power up to 1W, and multi-level adjustable, all technical indicators to meet European industry standards;
★Temperature compensation circuit, frequency stability better than ±1.5PPM;
★ Operating temperature range: -40 ℃ ~ +85 ℃ , to adapt to a variety of harsh working environment, the real
industrial-grade products;
★ All-aluminum alloy shell, compact size, easy to install, good heat dissipation; perfect shielding design, good
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