Light weight high performance sound level meter


Additional Information – SL4011


  • Large easy to read LCD display
  • Frequency weighting networks are designed to meet the IEC 61672 Type 2
  • A & C weighting networks conform to standards
  • Time weighting (fast & slow0 dynamic characteristics modes
  • AC/DC output for system expansion
  • Built in adj. VR is available for easy calibration
  • Condenser microphone for high accuracy & long-term stability
  • Max. hold function for storing the maximum value on display
  • Warning indicator for over and under load
  • Uses durable long-lasting components including a strong light weight ABS-plastic housing case
  • Small and light weight design allows one handed operation
  • Low battery indicator


Measurement Range: 3 ranges, 30 to 130 dB, input signal only

Resolution: 0.1 dB

Frequency Weighting Network:

Characteristics of A & C.

A weighting – The characteristic is simulated as “Human Ear Listing” response. Typical, if making the environmental sound level measurement, always select to A weighting.

C weighting – The characteristic is near the “FLAT” response. Typical, it is suitable for checking the noise of machinery (Q.C. check) & knowing the sound pressure level of the tested equipment.

Frequency: 31.5 Hz to 8000 Hz

Calibrator: B & K (Bruel & kjaer), multi-function acoustic calibrator

Microphone: Electric condenser microphone

Size of Microphone: 1/2 inch standard size

Range Selector: 30 to 80 dB, 50 to 100 dB, 80 to 130 dB, 50 dB on each step, with over & under range indicating.

Operating Temperature: 0°C to 50°C

Operating Humidity: Less than 80% RH

Power Consumption: Approx DC 6mA

Dimensions: 255 x 70 x 28 mm

Weight: 280g

Standard Accessories: Instruction manual & calibration screw driver