1. This product is a multifunctional tester with built-in high-precision voltmeter + resistance measuring instrument + diode tester + oscilloscope.2. Pen design, easy to use, easy to carry3. This product can be mainly used in some quick maintenance scenarios1. Oscilloscope:Frequency measure Accuracy:+/-1% MaxOne-key AUTO display waveformSampling Rate:2MSa/s 400KHz BandwidthStorage depth:4KbitTrigger mode:AutoTrigger edge:Falling edgeCoupling mode:DCMaximum test voltage:24VVertical sensitivity:50 mV/div-10 V/divHorizontal time base range:10us/div-200ms/div2. Voltage measure:Measure Accuracy:+/-1.5% or +/-0.15V Max Maximum Input - Voltage:24VMinimum Resolution:0.1VVoltage Alarm3. Resistance measureMeasure range:10Q-5MMeasure Accuracy:+/-2%4. Diode measure5. On-Off measure6. Other paremeters:1.14inch 135x240 TFTRechargeable BatteryProduct Size:160x27x26mmPower port:USB Type-C 5V/1AOperate humidity:less than equal 80%Operate temperature:0-50Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.Colour:BlackMaterial:ABSPackage Contents:1 x Multifunctional tester1 x Test attachment1 x charging cableOnly the above package content, 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.