1. Simple construction,reliable performance.The product can output stable and reliable switch control signal of high or low voltage. The reserve tank can be moved if installing this model. 2. Sturdy and durable,need not maintain.The product can be used for a long time after it being installed, Almost no maintenance and repairing problem would occur during its operation period. 3. Easy installation method,convenient adjustment method. 4. The liquid level control prism can be adjusted at willwith the locating piece moving up and down. Only mount appress to finish installation. 5. Application:Water fountain, water dispenser, water cooler, air cooler, dehumidifier, coffee machine, coffee maker, water heater, water boiler, hydroponic system, air conditioner, humidifier, bathroom equipment, vending machine, oil tank, chemical liquid level control. It will be widely applied in motor vehicles, industrial equipment, agriculture equipment and household appliances in the future. Terminal Model:ZH1.5 - 3PIN White Supply voltage:3.3V Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:As Shown Material:ABS Package Contents: 2 * Water level sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.