The KNF-100CLsensor cleaning brush is equipped with an automatic cleaning device which consists of a built-in motor drive circuit, position detection circuit, DC motor and cleaning brush. Automatic cleaning device can effectively remove the sensor surface stains, prevent the attachment of microorganisms, greatly reduce the maintenance cost. The sensor can be easily installed on the outside of the cleaning bracket. The upper end of the sensor cleaning brush is designed with 3/4 "NPT thread for easy installation.