Model Number: DT2234C This non-contact tachometer is a professional and practical motor speed meter designed to measure revolutions per minute (RPM) with a wide measuring range and high resolution. It features high accuracy, fast measurement response, and a long detection distance of up to 500mm (20 inches). The tachometer is easy to usesimply apply the included reflective tape (3 pieces included) onto the target object and aim the beam at the surface. It is suitable for a wide range of applications, including measuring rotational speed of machinery, motors, wheels, lathes for metal or wood cutting, electric fans, paper manufacturing, plastic industry equipment, fiber machinery, washing machines, automotive applications, and more. This handheld digital photo tachometer offers stable performance and non-contact RPM measurement. It automatically records maximum, minimum, and last measured values, and includes a low battery indicator. Features: - Measurement distance: 220 inches (50500mm) - LCD display with 5-digit, 18mm (0.7 inch) digits - 0.8 second sampling time - Measuring range: 2.5 RPM 99,999 RPM - Resolution: 0.1 RPM (2.5999.9 RPM), 1 RPM (1,00099,999 RPM) - Accuracy: (0.05% + 1 digit) - Time base: 6MHz crystal oscillator - Automatic range switching - Functions: Displays last value, MAX, and MIN - Power supply: 1 x 9V 6F22 battery (not included) - Power consumption: 30mA - Operating temperature: 050C (32122F) - Product size: 130 x 70 x 29mm / 5.12 x 2.76 x 1.14 inches - Product weight: 79g / 2.80oz Notes: 1. Reflective tape must be applied to the object being measured. 2. Do not point the beam directly into eyes; eye protection is recommended. 3. Do not use near flammable gases or in hazardous environments. Color: Black + Brown Material: Plastic Package Contents: 1 x Digital Tachometer (Other accessories not included) Note: Lighting and display settings may cause slight color variations between the product image and actual item. Measurement error allowance: 13cm.