Features:
Can preset up to 9 impeller quantities， measure more accurately.
Hold maximum value， minimum value， and the last measured value.
Clearly show the operation instruction and unit symbols.
Automatic range conversion and maintain measurement data automatically.
Selectable unit of the rotate speed between RPM and RPS.
With low battery indication and LCD backlit display.
Automatic power off after being idle for 10 mins.
Combine the latest microprocessor technology and laser technology， more intelligent and reliable.
Mini size， handheld and portable.

Specifications:
Display 5 Digits LCD display
Units RPM， RPS
Measuring range 100 ~ 30000RPM， 1.7 ~ 500RPS
Resolution 0.1RPM(100 ~ 999.9RPM)， 0.1RPS(1.7 ~ 100RPS)
1RPM(1000 ~ 30000RPM)， 1RPS(100 ~ 500RPS)
Accuracy ± (0.1%n + 5d) RPM; (100 ~ 9999.9RPM)
± (0.02%n + 2d) RPM; (10000 ~ 30000RPM)
Sampling rates 1/Sec
Number of impeller setting 1 ~ 9
Time base Quartz crystal
Circuit Exclusive one-chip of microcomputer LSI circuit
Detecting distance 10 ~ 40cm / 3.9 ~ 15.7in
Auto power off 10 Minutes idle
Operational condition -10 ~ +50 Degree Celsius; 14 ~ +122 Fahrenheit degree; 10% ~ 90% RH
Storage condition -20 ~ +60 Degree Celsius; -4 ~ +140 Fahrenheit degree; 10% ~ 75% RH
Power supply 3 * 1.5A AAA (LR03) (Not included)
Product size Approx.14.3 * 5.5 * 2.8cm / 5.63 * 2.17 * 1.1in
Product weight Approx. 72g / 2.52oz (Without batteries)
Package size Approx. 14 * 4.5 * 22cm / 5.51 * 1.77 * 8.66in
Package weight Approx. 151g / 5.33oz (Without batteries)


Package includes:
1 * Tachometer
3 * Reflective tape mark
1 * Instruction manual (English)



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