The tachometer uses microcomputer(CPU) technique; photoelectric technology， anti-jamming technique and junction laser technique for non-contact measurement of rotation speed(RPM)， frequency(Hz) and total cycle(Total).Features:Wide measuring range and high resolution.Large screen LCD display provides clear reading.Automatically save Max， Min and last values， also save 96 sets of continuous data.The tachometer starts to store data after first reading.Low battery voltage indication.Smooth housing design， comfortable to hold and use.The tachometer uses microcomputer(CPU) technique; photoelectric technology， anti-jamming technique and junction laser technique for non-contact measurement of rotation speed(RPM).Specifications:Color: Dark Blue + Dark GrayMaterial: PlasticDisplay: 5 digital， 18mm LCDRange: 2.5~99999 RPM; 0.05~1666Hz; 1~99999 CountResolution: 0.1 RPM (2.5~999.9RPM); 1 RPM (above 1000RPM); 0.01Hz(0.05~99.99Hz); 0.1Hz(above 100Hz)Accuracy: ÷(0.05%+1 digital)Sampling Time: 0.8s(over 60RPM) Range Select: Auto-RangingTime Base: 6MHz Quartz Crystal Memory: Max. Value， Min. Value， Last Value Detecting Distance: 50mm-500mmPower: 3 * 1.5V AA Batteries (not included)Item Size: 155 * 70 * 35mm / 6.1 * 2.75 * 1.38in (L * W * H) Item Weight: 143g / 5.06ozPackage Size: 20 * 15 * 5.5cm / 7.87 * 5.9 * 2.16in (L * W * H)Package Weight: 424g / 14.96ozPackage List:1 * Digital Tachometer 3 * Stickers 1 * Screw1 * User Manual (English)"
