V2.5 update log(2025-12-11):
1.Modify the peak-to-peak value and duty cycle setting UI of the signal generator
2.Fix bug : In some cases, the cursor icon remains after the Y2-1 measurement is cleared
3.Improve the stability of the oscilloscope during operation
4.After clicking the Auto button on the oscilloscope, a prompt will be added

V2.4 update log(2025-10-09):
1. Multimeter add function: Long-press the waveform area to reset the maximum , minimum and waveform data;
2. Fix the multimeter bug: mV and uA mode, REL function calculation error;
3. Fix the signal generator bug: Incorrect display in certain cases;
4. Fix the oscilloscope bug: Abnormal afterglow  in certain cases;

V2.3 update log(2025-07-01):
1. The Bluetooth APP has added a corresponding 4-20mA percentage display function in the DC mA mode (the APP needs to be updated to the latest version)
2. The multimeter fix the bug of AUTO function error after using manual range;
3. The multimeter fix the bug of incorrect gear recognition in certain special situations;
4. The oscilloscope fixed the bug of trigger threshold display error when voltage gear changing;
5. Optimize the interactive experience of touch buttons;

V2.2 update log(2025-05-16)：
1. The multimeter add a 4-20mA percentage display function for the DC mA measurement, with a range of -25% to 125%. It will display OL when exceeds; ,
2. Fixed the bug where the voltage level did not follow the change when modifying the attenuation factor of the oscilloscope
3. Fixed the bug where the output waveform duty cycle of the signal generator was incorrect when the square wave duty cycle was at 0% and 100%
4. Fix bug: Double finger sliding pops up shutdown interface causing abnormal display

V2.1 update log(2025-03-24)：
1. Add Bluetooth function to the multimeter (currently only supports Android version, IOS version is developing), please refer to the manual for use!
2. The multimeter fix the bug of resistance measurement error caused by gear changing;
3. The multimeter fix a bug where large capacitors cannot be measured in certain situations;
4. The multimeter fixed a bug where the trend chart displayed incorrectly in certain situations;
5. The oscilloscope fixed the bug of some abnormal situations in the AUTO function;
6. Fix touch abnormality bugs in certain situations;
7. Support JPG format startup logo, resolution 480 * 320, name logo.jpg;
8. Modify the startup mode to short press the power button to turn on the device;
9. Optimize the display of the charging progress bar during charging;

V2.0 update log (January 20, 2025):
1. The multimeter added mode remember function (Settings ->Other) and time base remember function
2. The multimeter added quickly switch between offline and online measurement modes. The Ω icon for online measurement is marked with an ON index prompt
3. The multimeter optimizes the issue of incorrect measurement of diodes, and adjusts the sound interval and length for different voltage drops
4. The multimeter optimize the Continuity measurement and quickly refresh the display after short the probe
5. The multimeter optimize AC+DC measurement speed and reduce the probability of false measurements in certain situations
6. The multimeter adjust the AUTO+function, select AUTO+to automatically switch to V mode
7. The multimeter fix the issue of various measurement modes not refreshing or refreshing abnormally
8. Add automatic shutdown countdown reminder. If there is still no touch operation after 10s countdown reminder, it will automatically shutdown
9. Modify the two finger sliding pop-up shutdown prompt, making it inconvenient to click on the smaller battery icon
10. Optimization of oscilloscope function to ensure consistency of measurement data at different time intervals
11. Oscilloscope function fixes bug causing abnormal triggering position of certain time gears

V1.9 update log (December 26, 2024):
1. The multimeter added online measurement mode of resistance, which effectively reduces measurement errors
2. The multimeter added shockproof mode, which can effectively avoid the problem of diode/Continuity measurement triggering errors when turned on
3. The multimeter added a screen data recording function, supporting up to 5 sets of data
4. The multimeter added touch lock/unlock function, and only the power button is available after locking
5. Fix the issue of the multimeter's maximum/minimum measurement not being refreshed in a timely manner
6. Fix the issue of slow switching between mV and V modes (use AUTO+ mode to disabled mV gear)
7. Add a touch battery icon to pop up a sliding shutdown function, which is convenient and fast
8. Fix bug: Oscilloscope function shows glitches on some models
9. Improve the problem of mistakenly closing the oscilloscope pop-up interface
