Extech SL250W Sound Meter


(GST 18% Exclusive)

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  In Stock

(However please contact store for precise delivery schedule. Backorder also allowed)

Extech SL250W Sound Meter is a compact device used to measure the noise levels in buildings and maintenance professionals. This Extech Sound Meter has Bluetooth connectivity which helps the user to View, Transmit and share the data from the device directly to the mobile with the help of the ExView App
Applications: Soundcheck, building insulation check, concert volume check, neighborhood noise disturbances, nightclub/restaurant noise, workplace noise, and airport noise

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Extech SL250W Sound Meter is a portable sound level meter that has a Bright backlit LCD display. This Extech Sound Meter has Set point violations alarm and data recording. Users can Create and send PDF reports including JPG photos of the measurement location with a connected smartphone or tablet camera.
Features of Extech Sound Meter:

  • This Extech SL250W Sound Meter Measures sound levels from 30 to 130 dB with ‘A’ weighted frequency for human hearing
  • Record max/min readings
  • It Freezes the display with ‘data hold’
  • Auto Power Off feature saves battery life
  • IT has a Tripod mount fits a standard 1/4”-20 mounting screw
  • Complete with 3 AAA (1.5 V) batteries
  • Transmit, view, and share data directly from a mobile device via Bluetooth
  • Connect up to eight compatible Extech Connected 250W Series meters simultaneously
  • Set up alarm and data recording
  • Programmable high/low audible alarms
  • Export data in .csv file format
  • View the app in day mode or dark mode for optimal user experience

Additional information

Weight 1 kg


Model No


Sound Range

30 to 130 dB

Max Resolution

0.1 dB

Operating Temperature

0 to 40°C

Operating Humidity

≤80% RH


±1.5 dB

Response Time

Fast / Slow

Sampling Rate

Fast: 125 ms (8 times/s)
Slow: 1000 ms (1 time/s)

Frequency Response

From 31.5 Hz to 8 kHz


Bluetooth (Free ExView App)

ExView App Compatibility

iOS 13.0 and higher; Android 9.0 and higher

Transmission Distance

>10 m up to 90 m line of sight


3 x AAA (1.5 V) battery (included)


153 × 53 × 28 mm


85 Grams

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Extech SL250W Sound Meter

Extech SL250W Sound Meter


(GST 18% Exclusive)

Add to cart