单选题 There is now a new keychain device that lets people turn off most TVs anywhere —— from airports to restaurants. And it is selling faster than 21 . "1 thought there would just be a few sales, but we can't 22 demand," said inventor Mitch Altman of San Francisco, U.S. "1 didn't know there were so many people who wanted to turn TVs off."
Hundreds of orders for Altman's US $14.99 TV-B-Gone device poured in last week. The tiny remote control device had been 23 in Wired magazine and other online media outlets. 24 , the unexpected attention overloaded the website of his company. Cornfield Electronics, and caused it to 25 .
The keychain device works like a 26 remote control ——but it only turns TVs on or off. With a push of the button, it goes through a 27 of about 200 infrared codes that control the power of about 1,000 television models. Altman said the majority of TVs should 28 within 17 seconds. It takes a little more than a minute for the device to 29 all the trigger codes.
The 47-year-old Altman got the idea for TV-B-Gone a decade ago. He was out with friends at a restaurant and they found themselves all 30 .by the TV, but no one was around to turn it off.