Recording ModeFNIRSI multimeter can plot measured value ripple that changes over time is drawn, and the fluctuation of voltage or current over time can be observed. 8 measured values can be recorded, and the Max and Min measurement values are displayed Monitoring modeCustom thresholds can be set in multimeter monitoring mode, and a warning will be issued if the voltage exceeds or falls below the set threshold Solving hungerBuiltin 1500 mAh rechargeable battery allows the multimeter tester to work longer. No more manually replacing bulky, unfindable disposable batteries, the Typec port renews energy at any time Intelligent ModeIn intelligent mode, DMT99 digital multimeter can identify the measurement content and select the range with the best resolution, making the measurement more convenient and faster,Takes out the guesswork for most applications Private customization2.4inch fullcolor TFT screen display, 240*320 resolution, makes it easy to use in dimly light areas. Supports DIY startup interface and creates your own personal entry interface Intelligent MultimeterIt measures ACDC voltage, ACDC current, and can be used to test resistance, capacitance, continuity, diode, NCV and live wire etc. Applicable to automotive, home appliances, other electronic repair. Dual ceramic fuse protection