Chengdu Ebyte Electronic Technology Co., Ltd.
E32-433T20D User Manual
Copyright © 2012–20 22 , Chengdu Ebyte Electronic Technology Co., Ltd.
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1 Overview
1.1 Product introduction
E32-433T20D is a wireless serial port module ( TTL level) based on
Semtech's SX1278 radio frequency chip, transparent transmission, working in
the 410-441MHz frequency band (default 433MHz), using LoRa spread
spectrum technology.
SX1278 supports LoRa spread spectrum technology. LoRa direct
sequence spread spectrum technology has the advantages of longer
communication distance, strong anti-interference ability, and strong
confidentiality. SX1278 is a milestone in the field of low-speed communication, and is favored by people in the industry. The default
air rate of this series is 2.4kbps , the transmit power is 20dBm, and the industrial -grade crystal oscillator is used to ensure its stability
and consistency, and the accuracy is less than 10ppm, which is generally used in the industry. At present, it has been in stable mass
production, and has been widely used in the three-meter industry, Internet of Things transformation, smart furniture and other fields.
The module has data encryption and compression functions. The data transmitted by the module in the air is random, and the data
interception is meaningless through strict encryption and decryption algorithms. The data compression function has the possibility to
reduce the transmission time, reduce the probability of being interfered, and improve reliability and transmission efficiency.
E32-433T20D strictly abides by FCC, CE, CCC and other domestic and foreign design specifications, meets various RF-related
certifications, and meets export requirements.
1.2 Features
Support advanced LoRa modulation , with the advantage of long-distance anti-interference ;
Under ideal conditions, the communication distance can reach 3km , and the transmission distance is better than that of
traditional G FSK ;
Support fixed-point transmission, broadcast transmission, channel monitoring;
Support air wake-up (ultra-low power consumption), suitable for battery applications;
Support FEC forward error correction to improve communication stability;
maximum transmit power is 100mW, and the software is multi-level adjustable;
Support global license-free ISM 433MHz frequency band;
Support data transmission rate of 0.3k
～
19.2kbps;
Support 2.3 ~ 5.5 V power supply, more than 3.3V power supply can ensure the best performance;
Industrial-grade standard design, support long-term use at -40 ~ + 85 ℃ ;
SMA-K interface for easy connection of coaxial cable or external antenna .
1.3 Application scenarios
Home security alarm and remote keyless entry;
Smart home and industrial sensors, etc.;
Wireless alarm security system;
Building automation solutions;
Wireless industrial grade remote control;
Intelligent intelligent agriculture, oilfield solutions;
