"The Nissin Air 1 Commander is a newly developed 2.4GHz radio transmission wireless flash system. To compare with the traditional optical wireless transmitters, 2.4GHz radio transmission is less susceptible to angle and obstacle limitation, coverage up to 30 meters. Transmission channels and radio transmission IDs can be set to prevent misfiring in the event of signal interference on the same channel. Nissin Commander Air 1 can control 3 groups of Nissin Flashes with the user friendly operation panel and variety function, it would be more convenient for the user. Stylish design with enhanced user experience Colorful LED control panel and select dial with simple user of interface in Nissin Air 1. Even beginners can quickly get started. All settings can be easily operated by one finger-tip. The new Nissin Commander Air 1 is designed to sit in the hotshoe of compatible cameras and will be able to remotely control and trigger NAS equipped flash guns. The commander can deal with three groups of flashes and can apply up to +/-2EV TTL flash exposure compensation. It allows 8 steps of manual output control, high speed synchronization as well as 1st and 2nd curtain triggering."