This tachometer is a high-quality instrument designed to measure revolutions per minute (RPM) with a wide measuring range and high resolution. It offers high accuracy, fast response time, and a long detection distance of up to 500 mm (20 inches) using a laser. The device is easy to use—simply apply the included reflective tape to the target object and aim the laser beam at the marked spot. It is suitable for a variety of applications, including measuring rotational speed of machinery, motors, wheels, lathes for metal or wood cutting, and more. Features: - Non-contact handheld digital tachometer with stable performance - Automatic and manual measurement modes - Wide measuring range: 2.5 to 99,999 RPM - High resolution: 0.1 RPM for 2.5–999.9 RPM; 1 RPM for 1,000–99,999 RPM - MAX, MIN, and AVG value recording function - Data hold, data storage, and recall for up to 60 readings - LCD screen with white backlight for clear visibility - Capable of measuring from a distance of 50–500 mm (2–20 inches) - Auto and manual power-off functions - Low battery indicator Specifications: - Color: Blue / Red (optional) - Material: ABS Plastic - Measuring Range: 2.5–99,999 RPM - Resolution: 0.1 RPM (2.5–999.9 RPM); 1 RPM (1,000–99,999 RPM) - Accuracy: ±0.02% + 1 digit - Measuring Distance: 50–500 mm (2–20 inches) - Sampling Time: 0.5 seconds (above 120 RPM) - Data Storage Capacity: 60 readings - Auto Power-Off: After 20 seconds of inactivity - Operating Temperature: 0°C to 50°C (32°F to 122°F) - Operating Humidity: 10% to 90% RH - Storage Temperature: -10°C to 60°C (14°F to 140°F) - Storage Humidity: 10% to 75% RH - Power Supply: 1 x 9V 6F22 battery (not included) - Product Dimensions: 145 x 90 x 35 mm (5.7 x 3.54 x 1.4 inches) - Product Weight: 79 g (2.81 oz) - Package Dimensions: 20 x 14 x 4 cm (7.87 x 5.5 x 1.57 inches) - Package Weight: 134 g (4.73 oz) Notes: - Reflective tape must be applied to the target object before measurement. - Avoid direct exposure of the laser beam to eyes; use of safety eyewear is recommended. - Do not operate the device in areas with explosive gases or potentially hazardous environments. Package Contents: - 1 x Digital Tachometer - 1 x Reflective Tape - 1 x User Manual (in English)