Spectrah SR-290 series are light sensor cards for industrial monitor, panel PC , digital signage, or industrial single board computer. This industrial monitor light sensor card provides power-saving & intelligent brightness control for display system. SR290 sensor product is able to measure the ambient brightness and send the information to industrial monitor or industrial PC to control the brightness automatically. The SR-290 series work with Spectrah's A/D boards and also support various industrial monitor and PC systems with light control.