Two Way Visual Feedback Interface: The large LCD display of the Skyport HS features two-way control via a Visual Feedback Interface that lets you see the exact power of every light in your setup right on the transmitter. Users can control each light's power level and modeling lamp setting directly from the Skyport transmitter or on the strobe itself, which instantly shows the updated power settings. | " Hi-Sync Technology: Go beyond the X-Sync of your camera. Photographers can simply switch to Hi-Sync mode and access sync speeds up to 1/8000s to freeze motion, overpower the sun, darken backgrounds, or use a wider aperture." | TTL and Manual Lock: When paired with the ELB 500 TTL users can enjoy beautiful exposures right from the first shot thanks to TTL and if desired, quickly switch to manual to take full control of the unit without losing exposure settings. | Impressive Wireless Range: The Skyport Transmitter Pro has 20 channels and 4 groups and a wireless range of 656' outdoors and 196' indoors. | Compatibility: Three previous generations of flash units including the EL- Skyport Transceiver RX module for Style RX, Digital RX, and Ranger RX systems and the integrated EL-Skyport modules for the BRX, D-Lite RX, ELC Pro HD, and ELB series.