Ming makes a number of neat little remote control tx/rx. You can send a unique
word or byte up to about 300 ft I think.
They also have keychain type or simple pcb's to incorporate into your own
project.
http://www.ming-micro.com/rfi_product.htm
Plunder thru the top webpage for all their products.
Rick

Micro Eng wrote:

> I'm searching for an inexpensive remote device that the transmitter is like
> a keychain thing (or bigger actually doesnt matter alot) that can send a
> single command to a VERY small reciever unit.  It doesnt need to work like
> the first time, in other words, if the rx doesnt get the signal the user
> activates it again.  It basically is a remote switch.
>
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