... Non-visual: BuzzerCommunication• RS232/TTL • USB(Ver. 1.1 HID Keyboard) • RS485 industrial portPower• Voltage requirement: 5V ... GS1-128),CODE11,CHINESE_POSTDurabilityTemperature0°to 50°C / 32°to 120°F(operation) ,- 40 ... °to 60°C / - 104°to 140°F(storage):Humidity5 ... SafetyProduct compliance:CE, FCC, IEC 60825-1 Class 2, GB7247.1-2001Enclosed itemsCable(USB,RS232/TTL,RS485), User ...