TOUCH SCREEN KEYENCE MODEL:VT3-W4T 3.7นิ้ว (สินค้าใหม่) INPUT : 24V DC 200mA CLASS2 SURROUNDING AIR TEMP : 50C OPERATING TEMPERATURE CODE : T5 ClassI,DIVISION2,GROUPS A,B,C AND D USB PORT IS FOR SYSTEM SET-UP AND MAINTENANCE AND IS NOT INTENDED FOR PERMANENT CONNECTION SEE INSTRUCTION MANUAL.