The Extech SL250W is a small sound meter with Bluetooth® connectivity, allowing construction and maintenance workers to see and share sound level data straight from a mobile device via the free ExView app. Users can acquire greater insights into workplace comfort and public health by capturing data, visualizing trends, setting visual and auditory alarms, and sending reports.
| Frequency Bandwidth | 31.5 Hz to 8 kHz |
|---|---|
| Response Time | Fast/Slow |
| Sampling Rate | Fast: 125 ms (8 times/s); Slow: 1000 ms (1 time/s) |
| Sound Range (dB) | 30 to 130 dB |
| Sound Range (dB) Basic Accuracy | ±1.5 dB |
| Sound Range (dB) Max Resolution | 0.1 bB |
| Weighting | A |
| Wireless Connectivity | Bluetooth® (via ExView iOS/Android mobile app) |
| Wireless Transmission Range | up to 90 m line of sight |
| Certifications | CE, FCC, UKCA |
| Dimensions | 6 × 2.1 × 1.1 in (153 × 53 × 28 mm) |
| Operating Conditions | 32 to 104°F (0 to 40°C),≤80% RH |
| Power | 3 × AAA (1.5V) batteries |
| Warranty | 2 years |
| Weight | 3 oz (84.6 g) |
