Interference-free, Cordless Remote Flash Control
If you shoot weddings, events, industrial or other location work, Pro-Sync is for you. Pro-Sync provides cordless, remote flash control with virtual immunity to interference. Unlike radio frequency (RF) remote flash control systems, Pro-Sync uses state-of-the-art coded infrared technology to fire remote flash units. Common sources of radio interference, like cellular phones, pagers, and cordless microphones (increasingly common at weddings) can disrupt radio flash control signals, but not Pro-Sync. And because the Pro-Sync signal is encoded, it cannot be triggered by any flash or light source.
Plugged into your remote flash, the Pro-Sync receiver is in a "standby" mode. Pro-Sync receivers are incredibly sensitive and can easily pick up the signal from behind backdrops, soft boxes, even around a roomful of wedding guests. Nothing else can trigger the receiver, not even a full-power flash fired inches away. They work indoors or out, with a maximum range of 600 feet (indoors).
The receiver draws power from the flash to which it is connected; there are no batteries to change. Receivers are available with either integral "H"-prong (household-style) or monoplug (European-style) sync connectors, so they connect directly, cordlessly, to most professional flash units or power packs. For additional versatility, each receiver also has a standard PC terminal.