Features: OOTDTY It can be utilized simply by sticking on the outer wall of the container, and the set up very convenient. No mechanical moving parts, high reliability. Small size, small discipline required for installation. Suitable for humidifiers, water heaters, ingesting fountains, electric home equipment and equipment that require liquid point control. Ultra-low standby energy consumption. fresh and positive Specifications: Material: Plastic+Metal Weight: 30g Size: As the image exhibits Applications: Humidifiers, Water Heaters, Drinking Fountains, Working DC5V Working Current:<15MA Output Method: NPN Package Includes: 1x Liquid Level Note: 1 enable 1-2cm errors because of handbook measurement, simply make sure to do not mind earlier than you order. 2 to the adaptation between assorted monitors, the image might not mirror the actual colour of the item.