Buy on Amazon : http://www.amazon.com/gp/product/B00EEL7WUC?tag=scratchandsti-20 <br /> <br />101 AV Security Monitor 10.4-Inch Professional Color LED Screen Display Public View Monitor <br /> <br />5 useful functions help the installer test and check devices Video test function <br />PTZ control and test function UTP cable test function Video generating function <br />RS485 data test function High resolution LCD screen Support more than 20 kinds of RS485 protocol <br />English OSD menu and number buttons Powered by adapter or rechargeable battery <br />One full charge means 8 hours of working time Battery power status display
