Bluetooth Interface Module

I was looking around some listing on components and found this Bluetooth Interface module

its one third the price of the typical HC-05 modules, which got me interested. But, i could not find a lot of information about how to use it. Plus, i noticed a big difference on how it looks as opposed to the common modules, this doesnt seem to have the chips for a typical bluetooth...

So it got me wondering..
1.) Does anyone here know how to use this?.
2.) how to use it?
3.) does it need something else to work? (some not so common items)
4.) and any links for a tutorial?...

If you want advice you need to post a link to its datasheet.

It looks to me like a breakout board to which you attach a Bluetooth chip.

...R

Yeah, it's just the breakout board for the Bluetooth module:


Solder them together and you get this:

From a quick browse on eBay, it looks like you save $0.04 by buying the two and soldering yourself vs. buying the assembled product. But once you add in the cost of solder and the shrink tube, you're probably not ahead at all.

pert:
From a quick browse on eBay, it looks like you save $0.04 by buying the two and soldering yourself vs. buying the assembled product. But once you add in the cost of solder and the shrink tube, you’re probably not ahead at all.

I see, Thanks Mate!. I almost ordered these. heheheh.
its a good time to order them, they’ve become cheap now and still are useful.

ag273n:
cheap now and still are useful.

Really only useful to people who have ordered the bare bluetooth module and then thought better of it.