Driver: M100 Category: Standard Display Color: 65K color TFT HMI Size (inch) : 3.5 Display Scale: 4:3 Resolution: 320xRGBx240 Brightness: Typical brightness 250 nit; 64 level back light brightness adjustment using software Viewing Angle (L/R/U/D): 60/60/50/55 Memory Space (Flash): 128MB or 1GB Input Power Voltage (V): 4.5-26 Power Consumption (W): 1.0 Interface: Serial Mode: Universal asynchronous receiver/transmitter (UART), 8N1 mode( 1 start bit, 1 stop bit,8 data bits, no parity bit), baud rate:1200-115200bps. USB Interface: No Touch Panel: 4 line resistance Touch panel LCD (DMT32240S035_01WT) Key-board Interface: 4*4 Matrix Keyboard interface Video Interface: No Real-time Clock (RTC) (Backup battery): No.