SmartSensor dB Decibel Detector Audio Tester

1. Mini digital sound level meter with stable and reliable performance.
2. Wide measurement range from 30dB to 130dBA.
3. Data hold function, maximum and minimum value measurement.
4. LCD display with backlight, convenient to use at night.
5. Low battery indication, automatic & manual power off function.
6. Compact and light, convenient to hold and carry.
7. Equipped with sponge ball for sensor protection.
6. Power supply: 3 x 1.5V AAA battery (Not included)