Touch Screen Module 4.3in TFT LCD RS232 RS485 Serial Port Display Board for Control Item Type: Touch Screen Module Model: WS-L043 Display: 4.3in TFT LCD Resolution, Px: 480x272 Colour: 260,000 Brightness: 300 cd/m2 Backlight: LED Life: 20,000 hours. Touch Screen: 4 wire industrial resistive touch screen with 4H surfaces hardness. CPU: 32 bit 600MHz main frequency, ARM9 built in 32MBDDR memory. Memory: 128Mbyte SPI NAND FLASH RTC: Built in real time clock. Power Off Data Save: Supports USB Port: 1pc USB 2.0 device port. Program Download Method: USB, memory card download. Communication Port: COM1: RS485; COM2: RS232. Rated Power: 2W Rated vVoltage: DC 24V Power pProtection: With +/-2KV thunder surge protection capability. Allowable Power Loss: <5ms CE and ROHS Certification: Conforms with EN61000-6-2: 2005; EN61000-6-4; 2007 standard: thunder surge +/-2KV, group pulse +/-4KV; electrostatic contact discharge +/-6KV; electrostatic air discharge +/- 10KV. Working Temperature: -20℃~50℃ Storage Temperature: -40℃~70℃ Ambient Humidity: 10~90%RH, non condensing. Shock Resistance: 10-25Hz in X, Y, Z directions, 2g/30 minutes. Cooling Method: Natural air cooling. Effective Display Area: Approx. 95.04 x 53.86mm / 3.74 x 2.12in Hole Size: Approx. 105.4 x 67.2mm / 4.15 x 2.65in