The Sentinel inspection system from Aries Industries is an integrated system with all components operated by an all-in-one controller. The compact, portable unit combines a lightweight reel, a quick-setup tractor and a state-of-the-art camera. A convenient controller operates all components in the system. The control unit, with an 8.4-inch LED screen and internal DVR, can be hand-held or mounted on a desktop. The reel is easy to transport for use in hard-to-access locations. The tractor, with various wheel sizes available, sets up quickly for standard operation in 6- to 15-inch pipe. A large line kit facilitates navigation in pipes up to 36 inches. The unit captures high-quality video with a pan-and-tilt camera. Auto focus and white balance, and a 40-1 optical zoom capture fine detail. The system is designed with minimal parts, providing long service life and low maintenance. 800/234-7205; www.ariesindustries.com.