Abstract: A photoelectric sensor has its own cleaning system which accommodates different possibilities for mounting the photoelectric sensor, so that it is no longer necessary to custom design cleaning systems. The photoelectric sensor includes an optical lens and a cleaning device which cleans the optical lens. The cleaning device further includes a fluid chamber coupled to a source of fluid, and a fluid dispenser in fluid communication with the fluid chamber and disposed adjacent the optical lens. The fluid dispenser is operative to dispense fluid on the optical lens to clean the optical lens. In a preferred embodiment, the cleaning system uses a pulse of air to remove dust from the optical lens of the photoelectric sensor.