From Manufacturer
The Ubertronix Strike Finder Pro II for Canon EOS is a lightning, laser, and sound camera trigger for capturing fleeting moments of action. With the included camera cable, a signal is sent to trip the shutter when the selected sensor detects action. The chassis can be mounted directly on the camera hot-shoe for convenience, or separately if necessary- only the camera cable must be connected for normal operation.
Lightning Trigger
Detects lightning strikes with an infrared sensor at night and during the day
Laser Trigger
Detects interruption of laser beam with only a 45-60ms delay
Sound Trigger
Detects loud signals with external microphone on an 18.0" (45.7 cm) cord
For Canon EOS Cameras with N3 Connectors
For Canon EOS 3, 1V, 1D, 1D Mk II, 1D Mk II N, 1D Mk III, 1D Mk IV, 1Ds, 1Ds Mk II, 1Ds Mk III, 1Dx, 10D, 20D, 30D, 40D, 50D, 5D, 5D Mk II, 5D Mk III, and 7D