Product Name: RS215 Ophthalmic Equipment LED Vision Chart Model NO.: RS215 Trademark: RS Transport Package: Carton Specification: CE, FDA, ISO9001 Origin: China HS Code: 90185000 Product Description LED Vision chartRS215 Technical Data1.Indicate the images immediately when turn on the screen.2.Software and information are retained when power is turned off.3.Update the software by SD card which behind the monitor4.Four units can be operated at the same time without problem.Technical DataLED screen size:21.5 " Working distance :1-6.5mResolution :1920*1080 4.Max brightness:250cd/m² 5.Max contrast ratio:1000:1 6.Mas resolution:1920*1080 7.Input signal:RGB 8.Signal Joint:15 PIN D Pattern Plug 9.Energy consumption:25W 10. Net weight :5KG 11.Compatibility:PC/MAC 12.Dimesion 150(D)*540(W)*385(H)mm 13.Screen power :AC 100V~240V 50/60Hz Placement 1.Can be hung on the wall by a bracket 2.Can stand on ground by a support 3.Can be set on the tableRS215 Appearance :All the models