2G Fallback Support Wired GSM Antenna Support EN 62056-21 Protocol Support Compatible with all M2M SIM Cards Simultaneous AC and DC Supply Options Monitoring Devices with 4G Technology HT G16 TECHNICAL FEATURES ▪ Communication terminals operate over a wide supply range of 85-265 VAC and 9-24 VDC. ▪ Supports RS-485, RS-232 and optical port communication channels. ▪ Can communicate with all meters that support EN 62056-21 protocol. ▪ Can communicate with 32 meters or 247 Modbus devices on RS-485 channel. ▪ LEDs indicating RS-485/Optical/RS-232 (Communication), GSM/4G connection and internet status. ▪ System architecture that does not require static IP. ▪ Data sending period can be set from 1 min to 240 min. ▪ Operating ambient temperature of the device is between -10 °C and +55 °C. ▪ Device is microprocessor based. ▪ Power consumption is less than 1 VA.