Now it’s easy to control your light from as far away as 300 m (1000 ft). Our new digital radio system, Profoto Air Remote, is built in to all D1 monolights, D4 Air and Pro-8a Air generators. Complete flash control of your camera, in your hand or from your computer, including flash power and modeling light control. Control an unlimited number of generators and heads on eight channels. Profoto Air devices deliver sync signals with a very short delay, just 200µs in fast mode. Signal connections are made with either a hot shoe or a cable. These small, handheld devices weigh only 70 g (2.5 oz) including batteries. They pack a lot of functionality and reliability into an easy-to-use control panel. Operating at 2.4 GHz, they are approved for world wide use. Profoto Air systems with sync can also operate with external receivers on older generators or other brands. Profoto Air Remote Our specially designed digital radio system, Profoto Air Remote, is built in to all D1 AIr monolights, D4 Air and Pro-8a Air generators. Complete flash control at your camera or in your hand, including flash energy control and modeling light control. Control an unlimited number of generators and heads clustered in up to six groups on eight channels.