Smart Sensor AR926 Digital Tachometer

From the shop's description

Features: 1. Applying the MCU, photoelectricity and laser semiconductor technology, perform measurement of rotating speed without contact. 2. Wide measuring range and high resolution. 3. Large LCD display can provide clearing reading 4. Solid structure built with durable electronic elements and light ABS plastic house. 5. Automatically store the MAX, Min and last value. Specification: Condition: 100% Brand New Brand: SMART SENSOR Model: AR926 LCD Display: 5 digits, LCD display. Accuracy: ± (0.05% + 1d) Sampling time: 0.8 sec. (Over 60 RPM) Test range select: Automatic range Detecting distance: 50mm ~ 500mm Measurement range: 2.5 ~ 99999RPM Resolution: 0.1 RPM (2.5 ~ 999.9 RPM) 1 RPM (above 1000 RPM) Power supply: 3 * 1.5V AAA battery (not included) Power consumption: About 50 mA Size: Approx. 150 * 56 * 31mm / 5.9 * 2.2 * 1.2in Weight: Approx. 182g