About this 3D model

This is a Bluetooth wireless for RAMPS .you need to enter AT mode to change the bitrate from 38400 to 115200 or 250000.And than pair the PC and wireless ,and than conect ,and than print .and than controll the printer as you wish ...enjoy wireless times. BT module link (only for China user....) :http://item.taobao.com/item.htm?spm=a230r.1.14.26.bnI2em&id=17759571300 .Dear friends who want to get the BT module pls check it out from ebay or amazon .