Features: 1.Precise incisions and interfaces ensure perfect fit, suitable for mounting position and easy to install. 2.The product uses high quality materials, effectively avoid corrosion and wear out, and durable. 3.Professional chip set provides superior performance in the system. 4.Easy to operate, anti-aging, and extended service life. 5.It can automatically detect the water level in the pool. When the water level is lower than a certain position, the water supply of the pump motor is automatically connected to fill the water. When the water level rises to a certain height, the power of the pump motor can be automatically cut off to achieve the purpose of automatically controlling the water level. Specifications: Material: PCB Power supply voltage: DC12V Color: As picture shown Packing List: 1 x PCB circuit board 1 x Accessories bag Installation note: 1) The LED pays attention to the positive and negative poles, and the long legs are positive. 2) Electrolytic capacitors are distinguished from positive and negative electrodes, and long legs are positive. 3) The white side of the diode 1N4007 is the negative pole, and the vertical bar on the board is the negative pole. 4) The direction of the chip notch and the direction of the notch of the base should be the same as the direction of the notch marked on the board. 5) Do not connect the positive and negative poles of the power supply. The power supply voltage is 12V DC. 1、Precise incisions and interfaces ensure perfect fit, suitable for mounting position and easy to install. 2、The product uses high quality materials, effectively avoid corrosion and wear out, and durable. 3、Professional chip set provides superior performance in the system. 4、Easy to operate, anti-aging, and extended service life. 5、It can automatically detect the water level in the pool. When the water level is lower than a certain position, the water supply of the pump motor is automatically connected to fill the water. When the water level rises to a certain height, the power of