TRSI TA657A Rechargeable Noise Meter Decibel Detector Device

1. LED high-definition color screen display: LED color screen display, clear numbers without ghosting. 2. Power supply mode/automatic shutdown: powered by 3.7V/220mAH lithium battery, automatically shuts down after 15 minutes of no operation. 3. Frequency weighting: A weighting 4. Measuring range: 30.0~130dB 5. Accuracy: +/-1.5dB (at reference sound pressure level, 94dB 1kHz) 6. Resolution: 0.1dB 7. Display: LED digital tube, maximum display 1999 8. Microphone: High-sensitivity 1/2-inch condenser microphone 9. Frequency response: 31.5Hz ~ 8kHz 10. Sampling rate: 2 times/second 11. Automatic shutdown: 15 minutes 12. Operating environment: -10~50 degrees Celsius, maximum 80% relative humidity, indoor altitude less than 2000m 13. Storage environment: -10~50 degrees Celsius, maximum 70% relative humidity (remove battery) 14. Dimensions: 133x30x18mm 15. Display screen size: 15 x21mm 16. Weight: 37g 17. Battery capacity: 220mAh 18. Charging port: Type-C