Specification: Functional and technical parameters LCD Monitor: five large-screen LCD display, character height 18mm Unit: rpm Range: 2.5-99999rpm Resolution: 0.1rpm (2.5 ~ 999.9rpm) 1rpm (1000 ~ 99999rpm) Basic accuracy: ± (0.1% n + 5d) rpm, (1000 ~ 99999rpm) Laser power: CLASSⅡ 2-5mW Sampling rate: 1 times / sec Test distance: 50-500mm Time base: quartz crystal Automatic shutdown: no key operation, the instrument will be turned off after 61s Maximum, minimum, average, last measured value remains Low Battery Tips LCD backlight display Memory function Operating Environment: 0 ~ 50oC, 32 ~ 122oF, 10 ~ 90% RH Preservation of the environment: -10 ~ 80oC, -14 ~ 176oF, 10 ~ 75% RH Dimensions: 55.7 * 29.9 * 127mm Weight: 106g Power: 2x1.5V AAA battery (Not Included) With three silver-paper (200 * 12mm) Package Contents: 1 x Digital Tachometer 1 x English Manual Service: All items have been well tested, examined and packaged before sending off to your address. If there is any confusion before or after ordering, just contact us, we would provide the best service to you. Note: This unit doesn't include batteries. Because the international air shipping forbid us to ship liquid, powder and batteries, so we can not put them in the package. Hope you can understand & buy the batteries in your local store or supermarket. Thanks for your support!
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