1、Minimum and maximum readings of the currently selected function are continuously recorded. No disassembly, no wiring, no contact, the probe is close to the high‑voltage line to directly detect the ignition signal. 2、Measure the ignition time (MS) and ignition voltage of the ignition signal. Measure the engine speed (RPM). Calibration function (only applicable to cop mode). 3、To display the minimum and maximum readings of the main display, if it has not been selected, short press the accessibility/capture button. To reset the minimum and maximum readings, short press the power on/off/reset button. These values are also static when they become 0. 4、User is required to calibrate the instrument to measure sparks in the coil on the plug and in the ignition system of the coil near the plug. This calibration uses the measurement values obtained during the process to find the best measurement parameters or a specific type of ignition module, and to compensate for differences in waveform and signal strength. 5、Once calibration is performed on one of the ignition modules of the engine being diagnosed, all subsequent spark measurements will be related to the calibration value. Accurate measurement, stable structure, strong durability, long life. Iten Type: Ignition Analyzer Material: ABS and rubber Display: LCD display mainly displays numbers, power, RPM, ignition system, functions and measurements Refresh Rate: 3 times per second Ignition System Selection: DIS, SPW, COP, single cylinder ignition, PS Stroke Choice: 2 or 4 strokes Automatic Power Off: 3 Minutes automatic power off Battery Life: Can be used continuously for about 20 hours Length of Pobe Tube: Approx. 28cm/11.0in Power Supply Battery: 9V alkaline battery, 200mAh, not distributed Features: Accurate measurement, stable structure, strong durability, long life Function: 1. Capacitive pickup 2. Flexible probe 3. Protect the rubber holster 4. Liquid crystal display 5. Power on/off/reset button 6. Secondary function/capture button 7. Ignition system button 8. Main function/calibration button 9. Engine cycle button 1 x Ignition Analyzer 1 x Optical Disc 1 x Storage Bag