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Where can one purchase a wireless transmitter which flashes a light at the destination?

I am looking for a wireless transmitter, push button type.  Once a button is pressed, a light will flash at the destination.
For example, person A has the wireless transmitter with the push button.
Person B is sitting at a desk about 20 feet away.  \
Once Person A pushes the button, a light will flash on a small device at Person B's desk.
Where can one purchase this?
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100questions
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100questions
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1 Solution
 
Dr. KlahnPrincipal Software EngineerCommented:
What kind of light is acceptable?  There's a variety of solutions ranging from a luggage locator with a red LED to an X10 unit that can flash a 400 watt spotlight.

If it doesn't have to be a light, a wireless doorbell will do the job for around ten bucks.
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100questionsAuthor Commented:
A small low wattage light is fine, just to capture the attention of Person B for instance if they are on the phone.  A small flashing light would work just fine, placed beside the phone or computer.
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Dr. KlahnPrincipal Software EngineerCommented:
Would something like this in a small desk lamp do the job?

http://www.ebay.com/itm/322255192595
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100questionsAuthor Commented:
@ Dr. Klahn..
Thanks, perhaps something a little smaller would be best.
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