This is a first impressions review of the BSIDE ESR02 Pro Transistor tester. It does much more than just testing transistors and diode’s - it also will test resistors, capacitors, and has a square wave generator and more. It will tell you what the transistor is; NPN, PNP, N-CH or P-CH MOSFET, and what the gain (hfe) is and the pin out. It wii give the voltage drop of a diode as well.
I found this on Amazon for $35.99, but Gearbest might have the better pricing - see link that helps me. I think a great price for what it does.
https://www.gearbest.com/testers-detectors/pp_009828944940.html?wid=1433363&lkid=21143654