Thank you! This is exactly what I'm talking about. This should cover my needs just fine.
I do realize though that I'd have to build a controller. To make the transmitter work would I need a micro controller? Or can I just power it and feed the output of a sensor into it?
The description mentioned modulated signals. Does this mean that what my arduino would receive would be a modulated signal? Or am I wrong?
Are there any other things you could think of that would work with an already existing transmitter?