How to use V317 OBD handheld diagnostic scanner?

V317 OBD scanner use instructions. Read and clear the trouble code.Data stream,EVAP,Battery voltage test Alibaba link:https://www.alibaba.com/product-detail/big-color-displsy-obd-OBD2-Car_1600366097631.html?spm=a2747.manage.0.0.795071d2S19T4R If you are interested in,kindly contact me. E-mail/skype:Betty@lonauto.com TEL/whatsapp/Wechat:+86 18665358397