BENETECH GT1355 Sound Level Meter for Noises Measurement

Features 1. Real-time measurement of various environmental noises 2.A/C Frequency weighting selection 3. Fast / Slow Time weigting selection 4. Three-color light alarm 5. Maximum 6. Data HOLD 7. Data storage: 31,000 data record function 8. Data Read(only on PC) and Delete 9. Automatic shutdown for about 10 minutes without button operation 10. Display date and time 11. USB charging and PC communication:Connect with the PC throug USB, provides data record download, real-time data sampling analysis and printing graph&data functions. 12. This Sound Level Meter was designed according to following standards: a. International electrician committee standard:IEC PUB 651 TYPE2 b. US national standard: ANSI S1.4 TYPE2 Specifications: 1. Calibration sound source: 94dB@1KHz 2. Measurement range : 30- 130dB(A), 35-130dB(C) 3. Accuracy: +/- 1.5dB(reference sound pressure standard,94dB@1KHz) 4. Resolution:0.1dB 5. Frequency weighting: A/C 6. Frequency response: 31.5Hz-8500Hz 7. Time weighting: FAST / SLOW 8. Sampling rate: Fast: 8 times/second; Slow: 1times/second 9. Rated current: 70mA 10. Standby current: 5microamps 11. Power supply: 3.7V lithium battery /1000mAh 12. Charging time: 1.5h 13. Duration of service: 8h 14. Date storage: 31,000 15. Microphone: 1/2 inch polarization capacitance microphone 16. Operating temperature:0-50Celsius 17. Operating humidity: 10-80%RH 18. Dimension: 160x56x31mm(excluding sponge ball) 19. Weight: Approx 126g （excluding sponge ball)