Why not use your Apple device such as iPhone, iPad or iPod Touch to control your Elinchrom "RX" flash lights? What do you need to make it work: Apple iPhone 3G / 3Gs / 4, iPod Touch, iPad / 2. Elinchrom EL-Skyport Mobile Phone Application from the Apple APP STORE (free). EL Skyport WIFI Module. Elinchrom "RX" flash units. EL-SKYPORT WIFI Features and Characteristics: Internal rechargeable Li-Ion battery, one charged battery lasts up to 10 hours. The Li-Ion battery recharges in approx. 3 hours. Integrated intelligent quick-charge circuit. Multi-Voltage, Multi-Connector EL-Skyport Universal Charger. Indication LED"s for charge and operating modes. Multi use, as EL-Skyport Universal Receiver module, when synchronized directly with a flash unit or as a EL-Skyport RX Wi-Fi module to enable remote control functions for Elinchrom flash "RX" units with iPhone, iPad, iPod Touch 3,5 mm SYNC-socket for all common flash units, when used directly as a "Universal Receiver" EL-Skyport NORMAL SYNC and SPEED SYNC mode settings. Settable 8 frequency channels and 4 workgroups. Interference free operation with 40 Bits security. Distance range: Wi-Fi up to 50 m outdoors and 20 m indoor. Distance range: EL-Skyport up to 100 m outdoors and 40 m indoor. Detection of all Elinchrom RX units: Digital RX 1200 / 2400 (with EL-Skyport Transceiver RX module connected to the flash unit). Style RX 300 / 600 / 1200 (with EL-Skyport Transceiver RX module connected to the flash unit). Ranger RX / RX SPEED / RX SPEED AS (with EL-Skyport Transceiver RX module connected to the flash unit). Ranger RX Quadra AS (with built-in EL-Skyport RX receiver). EL-Skyport Universal Receiver modules. Wireless Firmware Update possibility with EL-Skyport 3.0 PC/MAC software. Automatic Auto-Standby to save battery power, when the module was not used for more than 1 hour. Camera triggering capability; requires extra camera cables. Designed Engineered and Made In Switzerland.