The transistor tester P1 is a versatile instrument for measuring and analyzing a wide range of components, including patch components, NPN transistors, triodes, MOSFETs, field-effect transistors (FET), diodes, capacitors, resistors, and inductors. - Professional tool: a dedicated component tester, meter, and MOS/NPN meter in one device. - Display and size: the P1 tester features a 1.44 inch full-colour screen. Overall dimensions are approximately 7.1 cm x 8.7 cm x 2.8 cm (2.80 in x 3.43 in x 1.10 in). - Interchangeable patch seat: the design of the interchangeable patch seat allows measurement of both tiny precision components and high-performance devices. - Performance and compatibility: provides accurate identification and parameter measurement across a broad range of component types. Use scenarios - Repair and prototyping: quickly identify transistor type and key parameters before replacement or circuit design. - Salvage and inventory: test incoming parts, sort by type and value, and verify functionality. - Education and demonstrations: illustrate component behavior and measurement results on the colour display.