Specifications

Measurement/Range 30dB to 130dB, 3 ranges

Range 1: 30 to 80 dB

Range 2: 50 to 100 dB

Range 3: 80 to 130 dB

Output 1 mV per 1 dB

Accuracy

(23 ± 5°C) Frequency weighting meet IEC 651 type 2, calibrating input signal on 94 dB(31.5Hz to 8 kHz), then the accuracy of A weighting is specified as following:.

31.5Hz ~ ± 3dB, 63Hz ~ ± 2dB, 125Hz ~ ± 1.5dB,

250Hz ~ ± 1.5dB, 500Hz ~ ± 1.5dB, 1kHz ~ ± 1.5dB, 2kHz ~ ± 2dB,

4kHz ~ ± 3dB, 8kHz ~ ± 5dB

Frequency Weighting Network Characteristics of A weighting

A weighting: The characteristic is simulated as "Human Ear Listening" response.

Frequency 31.5 Hz ~ 8,000 Hz

SL-406 Factory Calibration Source B & K (Bruel & Kjaer): Multi-function acoustic calibrator, model: 4226

Microphone Type Electric condenser microphone

Microphone Size 0.5" standard size

Calibration VR Build in external calibration. VR.

Battery DC 9V battery (006P, 6F22)

Power Consumption Approx. DC 4mA

Operating Temperature 0°C ~ 50°C (32°F to 122°F)

Operating Humidity Less than 80% RH

Weight 150g/0.33 LB (including battery)

Dimension Main Instrument:

107 x 53 x 29mm (4.2 x 2.1 x 1.1 inch)

Probe:

Dia. 12.7mm x 70mm (Dia. 0.5 inch x 2.76 inch)

Accessories Included Operation Manual

Optional Calibrator

94dB Sound Calibrator, model: SC-941

94/114 dB Sound Calibrator, model: SC-942