RF Receiver for 433mhz and 315mhz?

I have a XD-RF-5V receiver wired to my Raspberry Pi listening with RFSniffer (433Utils). I also have a XD-FST 433.92mhz transmitter wired to my Raspberry Pi running codesend (433Utils).

I can successfully transmit and receive between these two devices.

$sudo ./codesend 500000 sending code[500000]$ sudo ./RFSniffer


I also have a 12v 4 channel relay that has a built in RF receiver and came with a remote transmitter. The paper than came with this relay kit says it is operating at 315mhz.

I want to sniff the codes from the remote for this relay kit. Whenever I try to run RFSniffer (433Utils) with the remote, it doesn't pick up anything.

On the back of the XD-RF-5V receiver it says 433mhz, 330mhz, and 315mhz so I would assume it can receive 315mhz signals.

Am I doing something wrong or making incorrect assumptions? Is there something I need to do differently to receive the 315mhz signal? Can this receiver even receive both 433mhz and 315mhz signals (like it says on the back)? I am a bit new to RF (and electrical hardware in general) so I am not really sure how these different frequency devices play together.

• my question though is, if you get the 315mhz receiver, would 433Utils RFSniffer read "those* codes? Or do you need a tool that is specific to that (315mhz) frequency as well. – user101882 Feb 28 '16 at 22:21
• You can sniff 315 and 433 both with the 433Utils RFSniffer – kspearrin Feb 28 '16 at 22:56