The Wohler VIS 400 MONITOR (4151) Color Monitor NTSC is made to be used together with a suitable camera cable, camera rod and camera head to visually inspect and document the condition of pipes in shafts. The keypad offers features for controlling the pan and tilt camera head, adjusting brightness of the LED illumination, and controlling the image and voice capture functions. The Vis 400 system is modular, allowing the user to put the camera system together to suit their unique requirements and wishes.