Enhance your measurement capabilities with this versatile Digital Tachometer, featuring both contact and non-contact measurement methods for maximum flexibility. Designed with precision and ease of use in mind, this tachometer efficiently measures rotational speed, surface speed, and distance across a broad range of industrial applications. Whether you need to measure RPM using the photoelectric laser non-contact method or through direct contact, this device offers reliable, accurate readings every time. Key Features: · Dual Measurement Modes: Integrates both contact type and photoelectric laser non-contact type methods, enabling photoelectric speed measurement, light source flicker frequency assessment, contact RPM measurement, and contact line speed measurement to suit various needs. · Wide Speed Range: Non-contact mode measures from 3 to 100,000 RPM, while contact mode covers 3 to 19,999 RPM. Additionally, it can measure linear distance up to 99,999 meters, surface speed from 0 to 1,999.9 meters/min, and 0 to 9,999.9 feet/min for comprehensive surface speed analysis. · High Accuracy & Resolution: With measurement accuracies up to ±(0.05% FS + 1 RPM) for non-contact and ±(0.1% FS + 1 RPM) for contact modes, this tachometer ensures precise data. It offers resolutions as fine as 0.1 RPM for speeds below 10,000 RPM, delivering detailed performance insights. · Multi-Functional Capabilities: Equipped with max and min value recording, data hold feature to freeze readings, and automatic shutdown to conserve battery life, optimizing both operational convenience and efficiency. · Clear HD Backlit Display: The high-definition LCD backlit screen makes it easy to read measurements even in low light or dark environments, ensuring usability across diverse settings. · Durable and Portable Design: Made with sturdy ABS material, the handheld tachometer weighs only 110g and features a compact design (130 x 59 x 29 mm), making it convenient for field use and easy transport. · Wide Industry Applications: Perfect for professionals in motor testing, fan production, paper and plastic manufacturing, chemical fiber processing, washing machine assembly, automotive inspection, aircraft maintenance, shipbuilding, and more. Specifications: · Model Options: TA500A (Non-contact), TA500B (Contact), TA500C (Combined Non-contact and Contact) · Measurement Range:    - TA500A: Non-contact 3~100,000 RPM    - TA500B: Contact 3~19,999 RPM, Distance 0~99,999 m, Speed 0~1,999.9 m/min, 0~9,999.9 ft/min    - TA500C: Non-contact 3~100,000 RPM, Contact 3~19,999 RPM, Distance and Speed same as TA500B · Accuracy: TA500A ±(0.05%FS+1RPM), TA500B ±(0.1%FS+1RPM), TA500C matches respective modes · Resolution: RPM <10,000 at 0.1 RPM, ≥10,000 at 1 RPM; distance and speed resolutions vary accordingly · Display: 6-digit LCD, max value 99,999 · Measuring Distance: Effective from 50 mm to 500 mm · Sampling Time: Approximately 0.8 seconds above 60 RPM · Operating Environment: Temperature -10 to 50°C, maximum 80% relative humidity, indoor altitude <2000 m · Storage Environment: Temperature -10 to 50°C, maximum 70% relative humidity (battery removed) · Power Supply: 2 x 1.5V AAA batteries (not included) · Dimensions: 130 x 59 x 29 mm (5.12 x 2.32 x 1.14 inches) · Weight: 110 g (3.88 oz) Package Includes: · 1 x Digital Tachometer · 2 x Reflective Tape · 1 x User Manual (English) This high-performance Digital Tachometer is an essential tool for accurate and versatile speed and distance measurement in industrial environments. Its dual measurement capabilities, broad speed range, and user-friendly features make it ideal for technicians, engineers, and quality control professionals seeking reliable performance and detailed data in a compact, portable device.