The Extech RPM250W is a small laser tachometer with Bluetooth® connectivity that enables building and maintenance workers to see and share revolutions per minute (RPM) data of rotating objects directly from a mobile device via the free ExView® app. Users can receive deeper insights into the health of their equipment by capturing data, displaying trends, setting visual and auditory alarms, and sending reports.
| Measurement Angle | ±30° from perpendicular |
|---|---|
| Measurement Distance | 50 to 500 mm |
| Revolution Count (Photo) | 0 to 99999 |
| Revolution Count (Photo) Basic Accuracy | ±2 digits |
| Revolution Count (Photo) Max Resolution | 1.0 |
| Rotation Speed [Photo] | 10 to 99999 rpm |
| Rotation Speed [Photo] Basic Accuracy | ±0.04% |
| Rotation Speed [Photo] Max Resolution | 0.1 rpm (<9999.9 rpm), 1 rpm (≥10000 rpm) |
| Sampling Time (Photo) | 1 s (>120 rpm) |
| Sensor Type | Photodiode and laser tube |
| Wireless Connectivity | Bluetooth® (via ExView iOS/Android mobile app) |
| Wireless Transmission Range | up to 90 m line of sight |
| Certifications | CE, FCC, UKCA, IEC60825-1:2014 CLASS 3R |
| Dimensions | 4.7 × 2.1 × 1.1 in (120 × 53 × 28 mm) |
| Display | 5-digit (99999-count) backlit segment LCD display |
| Operating Conditions | 32 to 104°F (0 to 40°C),≤80% RH |
| Power | 3 × AAA (1.5V) batteries |
| Warranty | 2 years |
| Weight | 2.9 oz (81.6 g) |