Display size:7inch TFT. Display area:154.08(W)x85.92(H) Resolution:800x480 px. Display color:16.77M true color Visual angle:70/70/60/70(L/R/U/D) Program download:USB Slave(Micro-USB)/U Disk/Ethernet USB Slave(Micro-USB)/U Disk Communication COM0:RS232/RS485/RS422.COM2:RS232. Product Name:Human Machine Interface Display Contrast:500:1 Backlight:LED Luminance:450cd/m² LCD life:More than 30000 hours Touch panel 4-wire precision resistance network (surface hardness 4H) CPU:ARM RISC 32Bit 800MHz Memory 256MB Flash Memory+128MB Memory RTC:Built-in RTC External storage:1USB Host Printer port:USB Host/Serial port Ethernet:10/100M adaptable Ethernet interface:None Bus interface:None Electrical Specification: Input range:DC12V-DC28V,inbuilt isolated power supply Power:3.6W@DC24V Allowable loss of power:Less than 3ms Insulation resistance:Greater than 50Mohm@ 500V DC Hi-pot test:500V AC 1 minute Note: There are no programs in the touch screen. Please make sure you have a program or know how to program before purchasing. If there is no program, you cannot directly replace the screen on the device, so please be careful when purchasing! ! Due to different production batches, there may be slight differences in products, which does not affect use. Type:GL070:without ethernet GL070 is a replacement model for MT4434T, the same hole size Support RS232,RS485 ,RS422 communication port MT4434T and MT4434TE support RS232,RS485 communication port Colour:Black-Gray Material:Plastic Package Contents: 1 * HMI Touch Screen