ieee488:
I would search for an eBay listing that has both the receiver and the transmitter as a set.
http://www.ebay.com/itm/433MHZ-Transmitter-Receiver-Module-SYN115-SYN480R-ASK-Wireless-Module-NEW-/311579545049One caveat is that I bought my modules 2 years but I would buy them again if I had another project.
Can the setup of the transmitter and receiver change the actual channel # being used? The other day I tuned my ham radio transceiver to 433 MHz and heard perhaps a dozen different devices transmitting on channel 1. One was probably my wife's weather station. But I live out in the country and if I can hear that many devices, city living means channel 1 is pretty crowded!
Paul