Eco-friendly, EPEAT Gold certified Philips Business Line 221B3 LED display with intelligent Power Sensor detects user presence & adjusts power consumption saving up to 80% of energy bills! Power Sensor is a built-in people sensor that transmits & receives harmless infrared signals to determine if user is present & automatically reduces monitor brightness when user steps away from the desk, cutting energy costs by up to 80-percent & prolonging monitor life. Philips monitor with LED backlighting is free of mercury content, one of the most toxic natural substances which affect humans & animals. This allows for an eco-friendly display throughout its lifecycle, from manufacturing to disposal.