1. Battery capacity: 4000mAh 3.7V lithium battery
2. Storage function: 2 seconds/pen, can be stored for one year
3. Communication with computer: communicate with computer via USB cable
4. Power supply mode: plug-in + charging, DC5V 1A Type-C USB interface
5. Measuring range: 30-130dB
6. Accuracy: +/-1.5dB (based on standard tone, 94dB@1KHz)
7. Frequency response: 31.5 Hz-8.5 KHz
8. Response time: FAST
9. Microphone: 6mm condenser microphone
10. Digital display: 3 digits
11. Resolution: 0.1dB (less than 100dB), 1dB (greater than 100dB)
12. Time display: 24-hour system
13. Temperature/humidity display: 2 digits
14. Low battery prompt: less than 3.6V
15. Function: supports alarm prompt (sound + display), alarm function
16. Size: about 15.1 x 4.8 x 8.6cm

Features:
1. Capacitive microphone sensor, ultra-thin metal vibration film practical output, instantaneous response
2. All-round monitoring of noise, temperature, humidity, time (with alarm function)
3. Support USB cable to connect to computer, can read instrument data in real time, export EXCEL table
4. With the characteristics of fast response rate, high measurement accuracy
5. Exceeding the standard sound and light alarm prompt, the indicator light flashes when the alarm is triggered, accompanied by a buzzer alarm sound