Model Number: AMF004 Brand Name: TLead Key Specifications/Special Features: This meter was designed according to following standards:International electrician committee standard: IEC PUB 651 type 2US national standard: ANSI S1.4 type 2Measuring range: 30-130dBA

Accuracy: ±1.5dB

Digit and resolution: 4 digits and 0.1dB

Frequency response: 31.5Hz - 8.5kHz

Frequency weighting characteristics: A

Sampling rate: 2 times/second

Microphone：1/2 inch polarization capacitance microphone

Max reading

Automatic backlight

Low battery indication

Automatic power off

Dimension: 57*36*149mm

Weight: 110g