Wein TeleFlash Monitor Confirms Fireing of Remote Flashes.
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Positively lets you know that every remote flash fired, every time! Stick a cordless TeleFlash onto each flash in your set-up (or clip it to the flash cord for better visibility). TeleFlash detects the electro-magnetic surge of a "good" flash firing, blinks a bright red LED for 5-10 seconds, then automatically resets for the next shot.
A quick glance at each TeleFlash in your studio gives you instant, reliable flash confirmation. A single 9V battery (not included) provides power for thousands of activations.