Anybody tried testing transistors?

Yes, I have. The hFE function measures the DC gain of the transistor when correctly inserted into the circular connector on the left of the multimeter. You will notice the connector is split for NPN & PNP transistor gain testing respectively with connections for both the Base (B), Collector (C), and Emitter (E) of your transistor. Be sure to properly insert your transistor leads all the way down on the correct side for NPN or PNP transistors as well as first identifying your transistors Base, Collector, and Emitter leads for proper testing. I just uploaded a picture on the listing page shows a transistor having it's hFE DC gain tested which is measured at 349. This is normal for this transistor and shows it functioning properly. Common transistor DC gain may be between 50-500, but this varies greatly transistor to transistor. The picture is not live on Amazon yet, so in the meantime here is a link to it for reference: https://www.protechtrader.com/image/PDM-711-Digital-Multimeter-hFE-Transistor-DC-gain-testing.jpg Also uploaded to Amazon a video demonstrating the Square Wave Function Generator Output from the PDM-711 Multimeter: https://www.protechtrader.com/image/Protechtrader-pdm-711-squarewave-function-generator-demo.mp4 If I can do anything else or if you have any other questions just let me know. We are a small husband and wife business and customer satisfaction is truly very important to us. Have a great day! Al & Amy aka ProTechTrader

How loud is the buzzer? Most multimeters have a tiny high-pitch sound that is nearly inaudible and useless to me.

For the continuity test function on the multimeter the buzzer is audible fine for me, and I have never had issues hearing it or had any complaints about it. Personally I find it very useful for circuit testing, but I have not used it in a very loud environment if that is what you are looking to do. It would be hard to define without testing on a sound meter, but that said it is about the typical loudness of buzzers in similar multimeters due to the piezoelectric elements used to emit the sound.

Does this have a warranty?

Hello! Yes it does have a warranty against factory defects and workmanship for 90 days. We at ProTechTrader stand by our products and are happy to help our customers with issues so do not hesitate to contact us directly at CS@ProTechTrader.com or through Amazon messaging system.

ASIN	B07FN91625
Amperage Capacity	10 Amps
Batteries	1 9V batteries required. (included)
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Zinc Carbon
Best Sellers Rank	#111,710 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #186 in Multi Testers
Brand	ProTechTrader
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (598)
Date First Available	July 17, 2018
Included Components	Multimeter Test Probe Leads, Manual, Battery (pre-installed)
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	1 pounds
Item dimensions L x W x H	4.92 x 2.72 x 0.91 inches
Item model number	PDM-711
Manufacturer	ProTechTrader
Material	Plastic
Measurement Type	Multimeter
Part Number	PDM-711
Power Source	Battery Powered
Product Dimensions	4.92 x 2.72 x 0.91 inches
Size	Compact (6.9 x 12.5 x 2.3 cm)
Special Features	Digital, AC DC, LCD Display, Large Screen
Style	Large Screen Multimeter PDM711
UPC	789048343101

ProTechTrader Large Screen Digital Multimeter - Volts Ohms Amps Transistor (hFE) Square Wave Output Diode & Audible Continuity Tester with Buzzer

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