• Measure sound level with ‘A’ weighted frequency
• Sound level measurement range: 30 to 130 dB
• Max resolution: 0.1 dB
• Basic accuracy: +/- 1.5 dB
• Connectivity: Bluetooth (Free ExView App)

The Extech SL250W is a compact sound level meter with Bluetooth connectivity. Using the free ExView app allows building and maintenance professionals to view and share sound level data directly from a mobile device. With the capability to capture, display trends, set alarms, and create and send reports, users can gain deeper insights on environmental conditions and equipment health.

Application for the Extech SL250W include: Sound check, building insulation check, concert volume check, neighborhood noise disturbances, nightclub/restaurant noise, workplace noise, and airport noise.

• Measure sound level 30 to 130 dB with ‘A’ weighted frequency for human hearing
• View data on both the meter LCD and via ExView APP on mobile device
• Bright backlit LCD display
• Records Max/Min readings
• Data Hold to freeze the displayed value
• Auto power off (5 min) can be disabled
• Tripod mount - fits standard ¼”-20 mounting screw
• ExView App to transmit, view, and share data directly from mobile device

• Connect up to eight compatible Extech Connected 250W Series meters simultaneously
• Portable data collection, analysis and reporting
• Set up alarm and data recording
• Programmable high/low audible alarms
• Export data in .CSV file format
• View app in day mode or dark mode
• Create and send PDF reports including jpg photos of measurement location