BSIDE S4 AC Voltage Induction Charging Smart Pen(Extra Sharp Nib)

1. Display: LCD display 2. Sampling rate: 0.5 seconds 3. Mileage: 12-300V 4. Resolution: 1V 5. Accuracy: -+5.0% 6. Alarm mode: analog bar, backlight and buzzer 7. Automatic shutdown time: about 5 minutes 8. Working temperature: 0-40 degrees Celsius 9. Storage temperature: -20 to 60 degrees Celsius 10. Power supply: built-in 3.7V 400mA lithium battery 11. Working height: 2000m 12. Equipped with LED flashlight, no fear of darkness