User Manual

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1.Introduction
1.2. Brief introduction
E32-DTU (433L37) is a high-speed 433M wireless data transmission station (with RS232/RS485 interface), LoRa spread
spectrum technology, transparent transmission mode, operating in 410~441MHz band (default 433MHz), operating voltage range of
8V~28V.
LoRa direct sequence spread spectrum technology will bring longer communication distance, and has the advantages of
concentrated power density, strong anti-interference ability. The module has software FEC forward error correction algorithm, which
has high coding efficiency and strong error correction ability. In the case of burst interference, it can actively correct the interfered data
packets, greatly improving the reliability and transmission distance. In the absence of FECs, such packets can only be discarded.
The module has the function of data encryption and compression. The data transmitted by the module in the air has randomness, which
makes the data interception meaningless through strict encryption and decryption algorithm. The data compression function has the
probability to reduce the transmission time, reduce the probability of interference, improve the reliability and transmission efficiency.
1.3. Features
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All core components originally imported, compared with the current similar imported digital transmission radio, the most advanced
function, the smallest volume, the best price.
★ Using temperature compensation circuit, frequency stability is better than ±1.5PPM.
★ All aluminum alloy shell, compact volume, easy installation, good heat dissipation; Perfect shield design, good electromagnetic
compatibility, strong anti-interference ability.
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Powerful software function, all parameters can be set through programming: such as power, frequency, air rate, address ID, etc.
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Built-in watchdog, and precise time layout, once abnormal, the module will automatically restart, and can continue to work
according to the previous parameter Settings.
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The RF core scheme adopts the original imported SEMTECH SX1278 chip, which has been praised by the industry for its
ultra-high stability, and is chosen by the majority of customers.