RS485 to GPRS Serial Device Server Wireless Communication for TCP 2G GSM HF7311 5-36V Item Type: RS485 to GPRS Serial Server Core Parameters: Model Name: HF7311 Function Explanation: Serial port to GPRS Processor: For RDA8955 Main Frequency: 256MHz Operating System: For SRX FLASH Resources: 4MB RAM: 4MB Network Interface Parameters: Cellular Standard: GSM/GPRS Antenna Form: External SMA male type Cellular Frequency Band: 850/900/1800/1900MHz Cellular Communication Network Protocol: TCP, UDP, DNS Cellular Transmit Power: GSM850/GSM900: Class 4 (2W) DCS1800/PCS1900: Class 1 (1W) GPRS Rate: Downlink 107Kbps, uplink 85.6Kbps Maximum Number of Connections: 3socket SIM Card Interface: 1.8V/3V (external) Serial Port Interface Parameters: Number of Serial Ports: 1 Interface Standard: RS485 Baud Rate: 1200-460800bps Product Features: Configuration Method: Serial AT command, IOT Service serial configuration software, IOT Service network configuration software WEB Page: Not supported IP Acquisition Method: DHCP Virtual Data Channel: Support Firmware Upgrade: Serial port or OTA upgrade Registration Package Function: Support Heartbeat Package Function: Support Custom Script Function: Not supported Packet Filtering: Not supported Serial Port Automatic Framing: Not supported RTU To TCP: Support NTP Function + Time Zone Setting: Support Parameter Import and Export: Support Reload Reset Interface: Yes Environmental Parameters: Working Temperature: -25-75℃ Storage Environment: -50-90℃, 5-95%RH (non-condensing water) Power Parameters: Input Voltage: 5-36VDC at 1A Interface Form: RJ45 interface Size: Approx. 61 x 18 x 26mm / 2.4 x 0.7 x 1in