1.Internet line test 2.Portable 2.5" LCD tester 3.RS232 and RS485, various protocols 4.Set Monitor function ... and exquisite appearance.2) 2.5” LCD display, and show camera image 1-channel video input, 1-channel video output.3 ... , PELCO-D, KALATEL, SAE etc.7) Control the PTZ and camera.8) External charging, factory configuration charger, two rechargeable lithium batteries ...