1. The product is made of high-quality materials with guaranteed quality2. The product is very suitable for DIY electronics enthusiasts, school training, experimental development, etc3. Stable product performance and long service life4. This is a multifunctional instrument production kit that measures voltage and current, temperature, logic level, circuit on/off, signal frequency and duty cycle, signal output, etc5. Short press SW2 to switch the function, with Nixie tube display, the data is clear at a glanceProduct Name: Multifunctional Instrument Production KitPower supply : USB power supply 5VWorking voltage: 5VWorking current: Static less than 30mAMeasure voltage and currentMeasure logic level, high level, low level, High impedanceMeasuring circuit on/offMeasurement frequency and duty cycleSignal generator with adjustable frequency and duty cycleMeasure the current ambient temperatureExternal temperature sensor can measure external temperatureTwo power outputs of 3.3v and 5vInstallation tutorial: https://.bilibili.com/video/BV1tN411S7wz/? Copy to browser to watch video tutorialColour:Photo ColorMaterial:plasticPackage Contents:1 x DIY loose parts with shellNote: Parts need to be welded by yourselfOnly 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.