Description: [Versatile Probe Lengths]:The probe induction available in three different lengths to suit your needs - blue at 1.5 meters, red at 3 meters, and white at 3.5 meters [Material]:The liquid level constructed from pp,ensuring long-last performance and reliability in various environments [Efficient Water Level Control]: The probe is designed for automatic regulation of water supply and drainage systems, making it ideal for use with water pumps and float [Easy Installation]: The probe comes with a single unit per package, simplifying the setup process for quick installation [Compact and portable]: Small size, easy to carry and store, convenient to use and with good performance Specification: Material: pp Size Chart: Blue:1.5m/59.06inch Red:3m/118.11inch White: 3.5m/137.80inch Package Includes: 1  Liquid Level Sensor Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.