Automatic detection of zener diode 0.01-30V. test with automatic calibration.Support IR coding.IR waveform display.Infrared receiving instruction.Measurement results using TFT graphic display.One key operation.Auto power off (timeout settable).Built-in high capacity rechargeable - battery.- Battery voltage detection.Used to detect NPN and transistors, capacitors, resistors, diodes, transistors, N-channel and P-channel MOSFETs, IGBTs, JFETs, triacs and batteriesSweep range: 0.1MHzVoltage: 3.7VDisplay: 160 x 128 TFTBattery: 1 x - battery, 3.7V, 300mAhColour:As ShownMaterial:PlasticPackage Contents:1 x Transistor Tester KitOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.