LoRa Modem IP67 Dust and Water Resistance Wireless Data Transmitter 433/868/915MHz CDSENTE E91-DTU Series RS485 Modbus 25KM

The E91-DTU Series is a new generation of LoRa waterproof wireless data radio. Developed based on a high-performance SEMTECH RF chip,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.

• Features the latest generation of LoRa spread-spectrum modulation technology for longer communication ranges and stronger interference resistance; 
• Supports multiple frequency bands including 433/868/915 MHz (customizable); 
• Constructed with a waterproof housing made of PC flame-retardant material, internally potted for waterproofing, and sealed with a silicone gasket, achieving IP67 waterproofing; 
• Simple and efficient power design supports both power adapters and direct wiring, with a power supply range of 8 –28 V (DC); 
• Maximum transmission power is 30 dBm, with multi-level adjustability, meeting industrial-grade technical
• specifications; 
• Supports data transmission rates from 2.4K to 62.5Kbps; 
• Supports Modbus protocol transmission; 
• Operating temperature range: -40 ° C to +85 ° C, suitable for various harsh operating environments — a true
• industrial-grade product; 
• Multiple protection features, including reverse polarity protection, overcurrent protection, and antenna surge
• protection, significantly enhance the radio’s reliability; 
• Communication ports and power interfaces feature isolation and high-level protection; 
• Supports firmware upgrades via serial port for easier maintenance; 
• Supports both HEX and AT command systems, allowing users flexible selection; 
• Supports relay networking; multi-level relaying is suitable for ultra-long-distance communication, enabling
• multiple networks to operate simultaneously within the same area; 
• Supports user-defined communication keys that cannot be read, greatly enhancing the confidentiality of user data;