Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Most useless dog in the world

The receiver will receive the signal within the radius of a funnel approximately 6 inches tall and 4 inches diameter directly above the green light. Oh sure I lied. It does better than that. This is what I did. Hooked the sucker up to my D200. Pressed, nothing, pressed again, nothing. Go up closer, nothing, and nothing, and fired! Wow! Ok, I put the magic wand (antenna) very close to the receiver, click, fired, click fired. I move the wand away, nothing, moved back, fired! I now wave my wand slowed following the obit of an imaginary cone projected from the green light and it fires every time within approximately 6 X 4 inches.I changed batteries twice, my luck did not improve.Did I get a bad unit? Did anyone else have a different experience?