Manufactured in Miami, THOR GUARD and Voice of THOR stand alone in offering the world's only lightning PREDICTION computer. For flexibility, the system is specifically engineered to work in either a manual or automatic mode. THOR GUARD uses a highly sophisticated sensor and computer to measure and analyze the electrostatic field in the atmosphere. Lightning originates within this field, thus allowing THOR GUARD to make calculations predicting its occurrence, even though there may be no visible evidence of lightning. Lightning "detection" systems require the occurrence of an actual lightning strike before a warning is given. Many times this is just too late. Couple our PREDICTION capability with the Voice of THOR, an interactive horn warning system, and you have a true, automatic advance warning package second to none! THOR GUARD is the only stand-alone lightning warning device used by the LPGA, the PGA Tour, Sr. PGA Tour, Nike Tour, most USGA section and many local sections of the PGA of America. We are the choice of Marriott Golf, The PGA Tournament Player's Clubs, ABC Television Sports, the Mobile Weather Team and the Atlanta Summer Olympics. The flexibility of our system not only accommodates private golf facilities needing plenty of advance warning (20 or more minutes), but also public facilities looking at only 8 to 18 minutes warning to insure revenue flow. THOR GUARD'S PREDICTION capability also minimizes false alarms, a significant departure from detection systems that are prone to unnecessary and costly shutdowns! THOR GUARD has provided accurate and dependable Lightning Prediction for a broad base of clients since 1974. This represents literally millions of hours of safe operations for clients that range from the U.S.Government, airlines, state and local agencies, the explosives industry, and schools, to a variety of recreational users. It is THOR GUARD's unique ability to PREDICT lightning that continues to make the difference.