Samsung UN40F5500 User Manual

Also see for UN40F5500: E-manual E-manual User manual

English - 18Eco Sensor and Screen BrightnessEco Sensor measures the light in your room and optimizes the brightness of the TV automatically to reducepower consumption. This causes the TV to brighten and dim automatically. If you want to turn this functionoff, go to Menu > System > Eco Solution > Eco SensorDo not block the sensor with any material. It can decrease picture brightness.1. Eco sensor This power-saving feature automatically adjusts the screen brightness of the TV accordingto the ambient light intensity detected by the Light Sensor.2. To enable or disable Eco Sensor, go to System > Eco Solution > Eco Sensor and select On or Off.3. Precaution: If you find the screen too dark while watching the TV in a dark area, this may be caused bythe Eco Sensor.