Need some RF guidance

Hi. I have a lot of experience with Arduino, but I'm brand-new to RF. I have a device that is remote controlled by this RF transmitter/receiver/switch: http://www.skylinkhome.com/products/wireless-plug-In-control-ws-100

I would like to replace the pushbutton transmitter with one that I can control through software and an Arduino. I have read countless posts about 315 and 433 MHz RX/TX components and ways to sniff RF signals. I'm pretty sure I could figure out how to code the signal and handle the software side.

I'm not so confident about the hardware. I researched the FCC documentation on the transmitter above (KUTWS100T) and found:
Frequency Range: 304.8 to 314.1 MHz
Output Impedance: 50 Ohms
Modulation type: F2X

I couldn't find any info on the receiver without cracking open the case (it's glued).

Given that the upper limit of the transmitter is so close to 315 MHz, is it likely that the receiver would respond to a widely available 315 MHz module that I could connect to the Arduino? Having no prior experience, I don't know how much tolerance these receiver frequency designations typically have.

Sorry if this is a stupid question.

Thanks,
Steve

Usually the FCC testing will test that the receiver does not respond inappropriately to signals outside its designated band. However the real focus of the testing is the transmitter, as receivers don't usually mess up your neighbour's baby monitor.

You can get some absolutely magic software-defined radios that can receive pretty much anything under the sun. (Hey, they will also pick up radio waves from the sun, but it doesn't have much to say at those frequencies.) They're sold as "USB TV receivers". But with the right software you can tune them to any frequency and see what your transmitter is saying. Decoding the serial protocol it uses will be the hardest part.

I finally tracked down the meaning of":F2X" modulation. It is also known as AFSK/FM. An audio tone is frequency is shifted between two frequencies to follow the data being applied, then the resulting audio is applied to an FM transmitter.

So, you will need an FM receiver able to output the audio tone. Then decode the two audio tones to recover the data character.

Paul

Thanks for the replies. Gives me some leads to follow.

Steve