Baglem® Light Led  had studied, prototyped, designed And finally put on the market:

The BAGLEM receiver AIR SWITCH RCM 854 allows the timed lighting of heliports directly from the radio to the helicopter. 

For info: http://www.baglem.com/en/products/heliports-obstruction-lights/26-heliports-obstruction-lights/263-radio-receiver-air-switch

or 0432/792809.