Enhance your speed measurement tasks with the versatile Digital Tachometer DT2236B, designed for precision and convenience in both contact and non-contact applications. This tachometer features dual measuring modes—photoelectric non-contact and contact type—allowing you to accurately measure rotational speeds, line speeds, and surface speeds across various industrial settings. Key Features: · Dual Measuring Modes: Offers both contact and photoelectric non-contact measurement methods, providing flexibility to measure rotational speed and contact line speed with ease. · Multiple Contact Probes & Wheels: Equipped with 4 different contact probes and various rubber contact wheels to ensure precise and reliable contact speed measurements on conveyors, gears, pulleys, wires, cables, and ropes. · Large LCD Display: Features a clear 5-digit LCD screen with 18mm high characters for easy, quick, and intuitive reading of measurements up to 99,999. · Wide Measurement Range & High Accuracy:  - Non-contact speed range: 2.5 to 99,999 rpm  - Contact speed range: 0.5 to 9,999 rpm  - Contact line speed (metric): 0.05 to 9,999 meters per minute  - Resolution up to 0.01 meters per minute and accuracy of ±(0.05%+1) ensures reliable data. · Memory Function: Stores maximum, minimum, and final values, preventing data loss during low battery or power interruptions. · Efficient Sampling Rate: Fast sampling time of 0.8 seconds for speeds above 60 rpm ensures timely readings. · Low Battery Indicator: Alerts users to replace batteries promptly, maintaining uninterrupted operation. · Wide Industrial Applications: Ideal for use in motors, fans, paper manufacturing, plastics, chemical fibers, washing machines, automotive, aerospace, marine, and other industrial sectors. · Compact and Portable Design: Measuring approximately 7.5 x 3.5 x 20 cm (3 x 1.4 x 7.9 in), this lightweight tachometer is easy to handle and transport for field or workshop use. Specifications: · Model: DT2236B · Display: 5-digit large LCD, 18mm character height · Power: 4 x 1.5V AA batteries (not included) · Non-contact Speed Range: 2.5–99,999 rpm · Contact Speed Range: 0.5–9,999 rpm · Contact Line Speed Range: 0.05–9,999 meters per minute · Resolution: 0.1 rpm (lower ranges), 1 rpm (higher ranges); 0.01 to 0.1 meters per minute for line speed · Accuracy: ±(0.05%+1) · Sampling Rate: 0.8 seconds (above 60 rpm) · Effective Distance: Laser 50–500 mm; LED 50–250 mm · Operating Temperature: 0–50℃ · Maximum Display: 99,999 Package Includes: · 1 x Digital Tachometer DT2236B This Digital Tachometer DT2236B is a reliable and multifunctional instrument designed to meet the demands of professional and industrial speed measurement. Its dual measuring capabilities, combined with high accuracy and user-friendly features, make it an essential tool for precise speed and line speed monitoring in diverse applications.