
4G Modem RS232 RS485 Interface for Data Transfer and Collection 4G DTU. Wide Frequency Band Support: Supports LTE-FDD, LTE-TDD, and GSM/GPRS/EDGE bands globally for versatile connectivity. Remote OTA Updates: Supports wireless remote program updates via server or mobile device for easy maintenance. Dual IO Switching Control: Features two switch inputs and outputs for remote control and alarm threshold customization. Automatic Server Backup: Automatically switches to backup server if main server fails, ensuring continuous data transmission. High-Speed Data Transmission: Uplink up to 5Mbps and downlink up to 10Mbps with LTE Cat1 for efficient data transfer. Flexible Interface Options: Includes RS232, RS485, TTL, and CMOS interfaces for diverse device integration needs. Secure Data Communication: Advanced protocol with correction and encryption functions ensures zero packet loss.