ML-020S-O Lux Sensor (MTI.AWS.EK.020S-O) illuminance sensor is an all-weather sensor with a customized detector sensitivity for outdoor high-light level applications. The built-in interference filter, in conjunction with the detector's spectral response, reproduces the CIE photopic curve and gives a calibrated output in lux (lx). Together with the ML-020S-I Lux Sensor, the ML-020S-O is often deployed in professional applications, controlling or monitoring industrial processes.