General description The Donaldson Switch Filter Minder - X220021 is a reliable and efficient tool designed to monitor the condition of your air filters. It provides real-time feedback on filter performance, helping to ensure optimal airflow and engine efficiency. This product is essential for maintaining the longevity of your equipment and reducing maintenance costs. Technical specifications Model: X220021 Dimensions: 4.5 x 2.5 x 1.5 inches Weight: 0.5 lbs Operating temperature range: -40°F to 185°F Compatibility and accessories Compatible with various Donaldson air filter models Includes mounting hardware Installation Easy installation with included mounting hardware Can be installed in various orientations Usage Monitor air filter condition Indicates when filters need to be cleaned or replaced