SMARTSENSOR AS824 ເຄື່ອງວັດແທກລະດັບສຽງດິຈິຕອນ (30-130dBA, 35-130dBC, ±1.5dB)

Specification:
- Measuring range: 30-130dBA, 35-130dBC
- Accuracy: ±1.5dB
- Microphone: 1/2 inch electret condense microphone
- Frequency range: 31.5Hz~8.5KHz
- Linearity Range: 50dB
- AC/DC output interface: yes
- Over range indication: yes
- Max reading hold function: yes
- Low battery indication: yes
- Power auto shut off : yes
- Power: 4*AA Battery
- Product Size: 265*70*35mm