The Model 540-001 LED Strobe features an integral LED tower with constant-on and flashing operations. In addition, the LED strobe provides a secondary contact output for activation of external auxiliary equipment. The Model 540-001 LED Strobe is specifically designed to operate with all GAI-TRONICS' emergency and SMART telephones, providing 240 flashes per minute when the telephone is in use. GAI-TRONICS’ emergency telephones are typically installed in many types of public areas such as, college campuses, parking garages, shopping malls, hospitals, sports arenas, amusement parks and more.