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 batteries Sweep range: 0.1MHz Voltage: 3.7V Display: 160 * 128 TFT Battery: 1 * - battery, 3.7V, 300mAh Colour:As Shown Material:Plastic Package Contents: 1 x Transistor Tester Kit Only 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.