Good units for acoustic electric conversions. However there is no template. I made my own. I found that because of teh curve of the guitar and the unit that once I laid out where I thought the tuner should go that I needed to move it up about 3/32 to make a perfect fit. So I laid out top and bottom locations and found center and then moved it up and it worked perfectly.
I just wanted to add one more thing. Although I used a sound hole dampener to smooth out the feedback., I found that on some guitars the low E was much bolder than the other strings and some of the other strings on some unites seemed a bit tin sounding. I remedied this by adding a very thing layer of rubber above and below the pickup under the saddle. And that did the trick on everyone that I have done since. I also use a bone saddle and nut and that seemed to magnify the distortions I was getting since they do a better job of transferring the notes to the body of the guitar and consequently the pickup. The rubber softens it a bit and still lets the bone saddle to add quality to the sound. These pickups are very sensitive. And I like that. With the modifications that I made you can play very light and get very clear sounds. Or play very hard and still get very clear and clean sounds. The pickups are coated in rubber but it is just not quite enough in my estimation.

I did the install myself and it looks great on my Mitchell MD100 CE. However........I'm not sure I like the pickup,as it accentuates the low E string a lot more than the other strings which I can barely hear. Maybe I need to turn the pickup around to fix this problem. I don't know since this is my first install and upgrade to my guitar. If turning the pickup around doesn't fix the problem then I'll put my original pickup back in to see if that will fix it then. If not, then I will have to get another pickup to see what that does. If none of that works then I would have to take 2 stars off my rating because to me the preamp then becomes suspect and then I would have to find another setup that would fit the hole I had to make for the original upgrade.....................
4/15/16
Well I finally put my original pickup that came with the guitar back in, and am satisfied with the results. All of the strings play with the same volume and ring equally true.

Overall, I think this is a great buy. There were no instructions or cut-out templates included, however a little studying of the parts and all should become evident. Some advice before cutting the openings for the preamp/tuner section... If you want this to fit perfectly snug, you will need to match the curvature of the preamp to the curve of the guitar. I found the easiest way to do this was by placing the preamp housing along the outside curvature of the guitar binding (front or back). Simply slide it on the foam/rubber gasket until the curves match. Also careful NOT to cut a perfect square. Leave angled corners for the mounting screws. Finally, take notice that the smaller of the two parts with the output jacks and battery compartment has a slight curvature, so again for this to fit snugly take this into consideration. IMO, this second cut-out seems to be a little extreme, I would have preferred having the battery within preamp section, requiring only one large cut-out on the instrument. That said, the finished product with that second section in place looks pretty awesome, and I really like that there's an onboard tuner with a light-up display. Functionality is good, as was the sound via the piezo pickup.

INSTALLATION: Installation takes some time and some precise cuts with a dremel but it can be done. It would have been extremely helpful to have a template included (the better quality ones come with a template). Just be VERY careful where you place it because of the curve of the unit. It has to go in an exact location on the guitar based on the curvature of the unit.
COMMENTS: At first mine would not work. I found out that it must have had a bad piezo pickup because I replaced the pickup and it works fine now.
OTHER OPTIONS: If I had to do it over I would probably have spent a little more and purchased a different model. After doing some research, the GFS EAP-520 Acoustic Preamp LCD 4-Band EQ onboard tuner from http://www.guitarfetish.com looks like a better option because 1. the battery is contained in the tuner unit (which means drilling a smaller hole for the output jack), 2. it is held in by a metal tab instead of just screws, 3. it has a template. Plus it is not much more expensive that this crappy piece of chinese junk.
RATING: Minus 1 star for no template and Minus 1 star for not working and making me tear it all apart to diagnose the problem.

I bought this transducer/EQ for a Takamine F-389 12 string acoustic I was rebuilding. For the price, it's a good unit, although extremely sensitive and thus a bit noisy. Built-in tuner seems accurate, and the 5 band EQ (actually 4 band: bass, mid 1, mid 2, treble and presence boost/cut) is useful, albeit noisy in the treble and presence. The under-saddle transducer is rubber-clad, and a bit wider than the saddle slot, requiring widening the slot and replacing the saddle with a wider one. Also, the transducer is thicker than most, requiring the slot to be routed about 1/16" deeper to accommodate the transducer.
Templates were not provided, but I was able to find ideal locations for the EQ unit and the battery/output jack box by placing each along the edge of the guitar and marking the locations. I then put strips of white vinyl tape on those locations, carefully peeled the foam gaskets from the EQ and battery box, and used them as templates, tracing the interiors. Thirty minutes with a Dremel, and the fit was perfect for each.
I was able to reduce some of the noise by using an electrical shrink sleeve on the wire from the transducer to the jack that plugs into the underside of the EQ.
I was a bit dismayed that the transducer was still active after turning power off on the EQ unit! This necessitates removing the battery when not using the EQ.
Overall, I'm giving the unit four stars for what it is for the money. For a more expensive guitar and professional applications I would certainly recommend investing in a far better transducer/preamp/EQ. But for inexpensive instruments, amateur uses and occasional gigging, this is a very inexpensive, usable item.