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hengdu Ebyte Electronic Technology Co.,Ltd
E95-DTU(400SL22-485) User Manual
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opyright ©2012–2020, Chengdu Ebyte Electronic Technology Co.,Ltd
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1. Introduction
1.1 Brief Introduction
E95-DTU (400SL22-485) is a wireless data transmission DTU that uses military-grade LoRa modulation technology. It has a
variety of transmission methods. It works in the 433MHz. The DTU provides a transparent RS485 interface, plastic shell, rail type
installation structure, support 8-28V voltage input. LoRa spread spectrum technology will bring a longer communication distance, and
has the advantage of strong anti-interference ability.
As a communication medium, wireless data transmission station has a certain scope of application like optical fiber, microwave
and open wire: it provides real-time and reliable data transmission of monitoring signals in private networks under certain special
conditions, with low cost, installation and maintenance convenience, strong diffraction ability, flexible network structure, and long
coverage. It is suitable for many and scattered locations and complex geographic environments. It can be connected with PLC, RTU,
rain gauge, level gauge and other data terminals.
1.2 Features
Using the latest LoRa technology, it is farther and more powerful than traditional LoRa digital DTU;
With data encryption, and the packet length can be set;
Adopt flame-retardant plastic shell, guide rail type installation structure, convenient and efficient installation
Hidden buttons are used to switch working modes to avoid false triggers, and the equipment is more reliable in operation;
Simple high-efficiency power supply design, support power supply configuration or line pressure mode, support 8 ~ 28V
power supply;
Support LBT function, the DTU automatically waits for transmission according to the current environmental noise
intensity. Greatly improve the communication success rate of the DTU in harsh environments;
Support wireless sending of command data packets, remote configuration or reading of DTU parameters;
Support communication key function, effectively prevent data from being intercepted;
It can realize multi-level relay networking, effectively expand the communication distance, and realize ultra-long-
distance communication;
Using temperature compensation circuit, the frequency stability is better than ±1.5PPM;
Working temperature range: -40
℃～
+85
℃
, adapt to various harsh working environments, real industrial grade products;
Multiple protection functions such as power reverse connection protection, over-connection protection, antenna surge protection,
etc., greatly increase the reliability of the DTU;
Powerful software function, all parameters can be set by programming: such as power, frequency, air rate, address ID, etc.;
Ultra-low power consumption, standby current is only 15mA (lower power consumption in power-saving mode and sleep mode);
Built-in watchdog and precise time layout. Once an abnormality occurs, the DTU will automatically restart and continue to work
according to the previous parameter settings.
Summary of Contents for 400SL22-485
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