... ,dust proof,vandal-proof(optional) Resolution: 4,096 x 4,096 pixels.Deviation of error: <2mmLight transmittance ... times at one single locationResponse time: less than 16 msTouch activation force: 10 to 100gWe normally ... 15 ,17 19 20,22, inch Grade A LCD monitor,three year guranteed.Brightness: 300cd/m2Contrast ratio: ... cutter or HP A4 size laser printer, or dot matric printer3.Card reader: IC card reader/ ...