This digital multi-functional tachometer can see the digits easily with the LCD screen and backlight. The 4:1 low-rotating speed measurement mode promises a more accurate measurement of the rotating speed.

Specifications
Measurement Range
Rotating Speed: 2.5-99999 RPM
Linear Speed: Max 99999m/min
Frequency: 1~1666.66Hz
Resolution: 0.01 RPM (3 ~ 999.99 RPM); 0.1 RPM (1000 ~ 9999.9 RPM); 1 RPM (above 10000 RPM)
Accuracy: ±(0.05%+1 digit)
Sampling Rate: 0.3S(rotating speed≥1,000RPM); 0.5S(rotating speedInterface: Mini USB
Current: Power: 3 * 1.5V AAA(Not Included)
Measuring Distance: 10~50cm
Dimension: 17.5 * 4.6 * 4.5cm / 6.89 * 1.81 * 1.77in (L * W * H)
Weight: 169g / 5.96oz
Package Size: 20 * 10.5 * 5.5cm / 7.87 * 4.13 * 2.16in (L * W * H)
Package Weight: 232g / 8.2oz

What is in the box
1 * Tachometer
3 * Reflective Sticker
1 * USB Cable
1 * CD
1 * Storage Bag
1 * User Manual (English)

• LCD screen, white backlight, no parallax. Automatic display prompt for low voltage. Frequency measurability. A MINI USB interface makes data transmission easier
• The rotating shaft's linear speed is measurable in the case of a given radius. The rotating shaft's radius may be set at 2-999mm
• The 4:1 low-rotating speed measurement mode promises a more accurate measurement of the rotating speed
• A filtering lens can receive the red light of specific wavelengths only, thus avoiding parasitic light effectively
• The function of automatic recording of the maximum, the minimum and the last value, and the continuous mode which can realize savings of over 18,000 data groups

LCD screen, white backlight, no parallax. Automatic display prompt for low voltage. Frequency measurability. A MINI USB interface makes data transmission easierMeMeDa