Has anyone used any of these modules?

I bought some modules froma supplier in the US, but the datasheets for these
modules (transmitters) on the laipac site only have 6 pins. My modules have
7 pins!

I tentatively wired one up based on an application note on the laipac site
that showed a 7 pin transmitter, but it didn't work.

Does anyone have any sample circuite diagrams for these modules (or any
laipac modules) that they know work?

Thanks!

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