Users Manual

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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1. Overview
1.1 Introduction
E22-900T30S is a wireless serial port module (UART) . It
has multiple transmission modes, LoRa spread spectrum
technology, TTL level output, compatible with 3.3V and 5V IO
port voltage.
With PA and LNA, the receiving sensitivity is
improved accordingly. LoRa direct sequence
spread spectrum technology will bring longer communication
distance, and has the advantages of concentrated power
density and strong anti-interference ability. It is different from FSK and GFSK.
The module has data encryption. Data transmitted over the air, with randomness, makes data interception
meaningless through strict encryption and decryption algorithms. The module reserves multiple IO interfaces to
provide custom development services.It supports packet length setting and also supports different real-time and
data packet.
1.2 Features
 Communication distance tested is up to 10km

Support the global license-free ISM 903-927MHz band；
 Support air date rate of 0.3kbps～62.5kbps；
 Support new generation LoRa technology；
 Support RSSI for evaluating signal quality, improving communication network, and ranging;
 Support LBT for monitoring channel environmental noise before sending data, and for improving
communication.
 Compared with SX1276, the power consumption of hardware is reduced by 40%,and the power consumption
of software is reduced by 35%;
 Compared with the SX1276, for the same power consumption, the transmission power is increased by 80%;
 Low power consumption for battery supplied applications；
 Support 3.3V~5.5V power supply, power supply over 5.0 V can guarantee the best performance；
 Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
 IPEX and stamp hole optional, good for secondary development and integration.