The Heliport Radio Controller is designed to provide complete control of heliport lighting systems. Lighting control can be provided by low voltage DC or AC power. The output of the controller can be activated manually by internal switches, or automatically with the use of a photocell and/or VHF radio control. The system is fully protected from input transients, output overload, over-voltage, and over-temperature conditions. The Radio Controller is designed to provide pilots direct, unassisted air-to-ground control of power circuits. Pilots activate lights from the air with key clicks from a VHF AM aircraft band radio. The controller uses a high precision radio to prevent false triggering. More details emma@chendongtech.com what'sapp: +86 13342512879