Digital semiconductor transistor dc parameter tester model dy207b

Description

-Measure rich DC parameters of maniford semiconductor, e.g.diode, transistor, controlled silicon, FET. 
-Measure capacitor, varistor, DC voltage signal source 
-Measure 78 and 79 series three terminal voltage regulator 
-Data hold, low battery warning 
-Complete with carry bag and four1.5VAA batteries 

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