* 8 useful functions help installer test and check devices* Video test function, high resolution LCD screen* PTZ control and test function* Output DC12V power to camera * Video signal attenuation analyzing* Multi-meter function* UTP cable test function* Video generating function* Updated RS485 data test function* Support more than 20 kinds of RS485 protocol* English OSD menu & number buttons, easy to operate* Powered by power adapter or rechargeable battery* Longer working time with battery