I was looking for a smoke machine for automotive leak detection. I checked online many different offers from different vendors, but this model was the most complete set including many useful accessories, for a very good price. The integrated air pump is very handy, so that you don't need any external air supply for leak detection. When comparing to the cheaper models, the SD307 model that I bought has a pressure gauge for pressure monitoring to be able to determine the severity of the leaks, and also has a flow meter with flow control knob, where you can monitor and modify the flow rate of the air or of the smoke. The inflatable inlet port adapter is the most important accessory, many other smoke machines from other vendors don't have it included. The smoke machine is working good and is really good for automotive leak detection. Sadly, there is no smoke oil included, so you will have to buy it elsewhere. Be aware of the fact that the smoke machine will stink for a few days after you use it with oil. I don't know if only my oil is generating a bad smell after it is used, or all oils. Next time I will try using it with a different oil.
Bela S. 
Celo 
JN 
CENUSE MARIAN 
