This sensor features high sensitivity ultraviolet (U.V.) for monitoring gas or oil flames which cycle on and off frequently. The Eclipse flame safeguard checks for a short-circuited, or "run-away" scanner at the beginning and end of each flame cycle. The scanner is UL listed, CSA certified and FM approved. It comes with a 6 foot cable lead. Safeguarded against reverse connection, the 90° U.V. Scanner operates with 6000 Series Multi-Flame and 6500 Series controllers.