Discover the ultimate Transistor Tester, an economical and widely used device for electronic enthusiasts! **Comprehensive Detection:** Accurately identifies NPN and PNP transistors, capacitors, resistors, diodes, dual diodes, Zener diodes, N-channel and P-channel MOSFETs, triacs, and batteries. **Clear Display:** Features a large graphical LCD screen for easy-to-read results. **Versatile Power Options:** Available in a Lithium Battery Version (3.7V 250mAh lithium battery) or Dry Battery Version (requires 2 AAA batteries, not included). **Durable Construction:** Made from high-quality ABS material for long-lasting performance. **Compact & Portable:** Measures 89 x 71 x 22 mm (3.5 x 2.8 x 0.87 inches), making it convenient to carry. **Important Note:** Always discharge capacitors before testing to prevent damage to the instrument. Do not use this instrument to measure live printed circuit boards, as it may cause damage. **Package Includes:** * **Lithium Battery Version:** 1 x Transistor Tester, 1 x Electronic Cable, 3 x Test Hooks. * **Dry Battery Version:** 1 x Transistor Tester, 1 x Set of Electronic Components, 1 x Screwdriver, 3 x Test Hooks.