Feature: Automatic detection of zener diode 0.01-30V. Self-test with automatic calibration. Support IR encoding. IR waveform display. Infrared receiving instruction. Measurement results with TFT graphic display. One-button operation. Automatic power off (time limit adjustable). Built-in high-capacity rechargeable -ion battery. -ion battery voltage detection. Used to detect NPN and PNP transistors, capacitors, resistors, diodes, transistors, N-channel and P-channel MOSFETs, IGBTs, JFETs, triacs and batteries Specification: Scanning range: 0.1MHz Voltage: 3.7V Display: 160 x 128 TFT Battery: 1 x Li-ion battery, 3.7V, 300mAh Material: Plastic Color: As shown Package Contents: 1 x Tester 1 x USB Cable 1 x Test Clip 1 x LED 1 x Capacitance 1 x Resistance The above package contents only, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.