?Recording Mode?FNIRSI 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 mode?Custom 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 hunger?Built-in 1500 mAh rechargeable battery allows the multimeter tester to work longer. No more manually replacing bulky, unfindable disposable batteries, the Type-c port renews energy at any time ?Intelligent Mode?In intelligent mode, DMT-99 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 customization?2.4-inch full-color 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 Multimeter?It measures AC/DC voltage, AC/DC 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