[Interface type]：RS485

[Communication distance]： 25km

[Size]：120*75*48mm

[Introduction]：The E91-DTU (400SL37) is a new generation of LoRa waterproof wireless data radio. Developed based on a high-performance SEMTECH RF chip, it boasts a maximum transmit power of 37dBm, multiple transmission modes, and an operating frequency band of 410.125MHz～493.125MHz, supporting interoperability with the E22 series modules. It features a 5-pin M12 waterproof connector, a waterproof plastic housing, a silicone ring seal, and internal potting for waterproofing, achieving an IP67 waterproof rating. It supports a wide voltage input of 8～28V (DC). LoRa spread spectrum technology provides longer communication distances and strong anti-interference capabilities. The product is coated with a conformal coating, offering protection against mold, moisture, and salt spray.