General Description: The digital LED tachometer is a high-precision measuring instrument designed to display rotational speed. It uses an advanced A/D conversion chip and a stable reference integrated circuit, giving it excellent stability and high anti-interference properties. This model is ideal for measuring various physical quantities such as temperature, pressure, and displacement, and is compatible with all types of digital displays. Technical Specifications Measurement Accuracy: 0.1% Display Mode: 0.56\" LED display Refresh Rate: > 3 times/s Power Supply: DC 8–24 V, 30 mA Measurement Range: 10–9999 rpm Proximity Sensor: Magnetic Size: 80 x 42 x 25 mm (3.14 x 1.65 x 0.98 inches) LED Display (optional): Red or Blue Weight: 80 g (red), 105 g (blue) Out-of-Range Display: The first digit shows '1' or '-1', and the last three digits are not displayed. Compatibility and Accessories Compatible with various external sensors to expand measurement capabilities. Installation Easy to install thanks to the standard design. Follow the included instructions for quick and efficient installation. Usage Use this tachometer to measure the rotational speed of motors, power tools, or other rotating devices. It is suitable for both industrial and home use. Home use. Other information: This tachometer is particularly appreciated for its robustness and reliability under various operating conditions.