Feature:1. [Compact Size] Easy to carry, convenient to operate and High quality to use.2. [LCD Display] 5-digit LCD clear display with backlight, 99999 maximum reading, not dazzling in grey font, visible in low luminance environment.3. [Non-contact Measurement] Based on embedded MCU, optoelectronic technology and semiconductor laser technology, this tachometer realizes accurate non-contact measurement.4. [Switchable Measurement Modes] Manual / Automatic mode optional, meeting various requirements.5. [Adjustable Laser Gear] Adjustable laser power (high / low), adapting the far / near distance requirement to protect user\u0027 s eyes.6. [Automatic Record] Automatically recording 50 sets of data, and the sampling interval time could be reset to meet different needs.7. [Automatic Shutdown] Automatic shutdown in 30 seconds without operation.8. [Additional Features] Capable of recording the maximum, minimum and average values.Specification:Features:[Compact Size] Easy to carry, convenient to operate and High quality to use.[LCD Display] 5-digit LCD clear display with backlight, 99999 maximum reading, not dazzling in grey font, visible in low luminance environment.[Non-contact Measurement] Based on embedded MCU, optoelectronic technology and semiconductor laser technology, this tachometer realizes accurate non-contact measurement. [Switchable Measurement Modes] Manual / Automatic mode optional, meeting various requirements.[Adjustable Laser Gear] Adjustable laser power (high / low), adapting the far / near distance requirement to protect user' s eyes.[Automatic Record] Automatically recording 50 sets of data, and the sampling interval time could be reset to meet different needs. [Automatic Shutdown] Automatic shutdown in 30 seconds without operation.[Additional Features] Capable of recording the maximum, minimum and average values.Specifications:Material: ABSColor: GreyPower Supply: 2 * AAA battery (NOT included)Power Consumption: 25mA (laser in low power), 40mA (laser in high power)Operating Temperature: 0~50Storage Temperature: -20~60Display: 5-digit LCD, Max. 99999Available Distance: 50mm~500mmSample Time: 0.5s (over 120RPM)Measuring Range: 2.5RPM~99999RPMResolution: 0.1RPM (2.5RPM~999.9RPM), 1RPM (1000RPM~99999RPM)Accuracy: 0.05%rdg + 1digtalItem Size: Approx. 11*6*2.5cm / 4.33*2.36*0.98inItem Weight: Approx. 72g / 2.54ozPackage Size: Approx. 19.3*12.5*4.5cm / 7.6*4.92*1.77inPackage Weight: Approx. 143g / 5.04ozNote:Please read the Users Manual before use.Packing List:1 * Digital Tachometer3 * Reflecting Tape Mark1 * Users Manual(English)Package List:1 * Digital Tachometer3 * Reflecting Tape Mark1 * Users Manual(English)