Here's some information to get you into ballpark for any device.
The industrial, scientific and medical (ISM) radio bands are radio bands reserved internationally for the use of radio frequency energy for industrial, scientific and medical purposes other than telecommunications.
You can refer to Wikipedia for more detail.
ISM band - Wikipedia, the free encyclopedia
Typically, when you do an FCC OET Search, it will give you the 'Center Frequency' of the band the device operates in.
I'm sure there are exceptions but I don't recall seeing any.
With that in mind, if I do an OET search for the FCC ID of my driveway alert AND my wireless outdoor thermometer, I get the following results.
BOTH devices operate on 433.920 MHz. But they do NOT.
They vary by quite a bit.
So, the search will get you to the right band, but normally NOT the correct frequency within the band.
Here are the results of the two searches, and the ISM bands.
You'll see that the frequency of BOTH devices is listed as the Center Frequency of the band.
Rich
Two different devices:
ISM Bands:
Some information that will help you with your OET search.
Grantee Code: *
Three or five character alphanumeric string representing the Grantee/Applicant.
Three character Grantee Codes always begin with an alphabetic character and do not contain the numbers one and/or zero.
Five character Grantee Codes always begin with a number and do not contain the numbers one and/or zero.This is a wildcard search to the right of the entered code.
Product Code: *
The Product Code is the non-grantee code portion of the FCC ID.
The Product Code may include hyphens and/or dashes (-).