* 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