Feature: 1. Water level sensor level liquid PP side mounted float switch, used in pool 2. It can be used to sense the liquid level in the storage tank. 3. Pumps, indicators, alarms or other equipment can be activated. 4. Use with hydroponics, salt water tanks, fresh water tanks, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating, or your project may not contain mercury working principle: One or more dry reed pipes are installed in a closed non-magnetic tube, and then this pipe is passed through one or more hollow floats with ring magnets inside The rise or fall of the liquid level will drive the floating ball to move together, so that the reed tube in the non-magnetic tube will pull on or off, and output a switch signal. The float ball should be used together with the relay and cannot be directly connected to the power supply. Specifications: Material: PP plastic Size: 8.2 * 2.6 * 2.6 cm Cable length: 35 cm Maximum contact rating: 10W (low pressure), 50W (high pressure) Maximum switching voltage: 100V DC (low voltage), 220V DC (high voltage) Maximum switching current: 0.5A (low voltage), 1.5A (high voltage) Maximum breakdown voltage: 220V DC (low voltage), 330V DC (high voltage) Maximum current carrying: 1.0A (low ampere), 3.0A Maximum contact resistance: 100m Working temperature: -10~85 () Working pressure: 0.2Mpa Package Included: 1 *Water level switch Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Manual measurement, please allow 1-10mm error. Thanks for your understanding. _x000D_