... TCP /IP Products:Exquisite appearance, 3-inch 65K color high-definition color screen, numeric keypad easy number input and ... to send short message function, supporting the complex time and attendance software attendance, personnel, shift work and other management, business ... /485, TCP / IP Attendance rate: 0.2 secondsLED:red, greenLCD:3-inch 65K color high-definition colorOperating temperature: -20C ...