56 ā AppendixAppendixSafety InstructionsWARNING: Use of controls, adjustments, or procedures other thanthose specified in this documentation may result in exposure to shock,electrical hazards, and/or mechanical hazards.For information on safety instructions, see the Safety, Environmental, andRegulatory Information (SERI).WARNING: The possible long-term effects of blue light emission fromthe monitor may cause personal injury such as digital eye strain, eyefatigue and damage to the eyes. Using monitor for extended periods oftime may also cause pain in parts of body such as neck, arm, back andshoulder.To reduce the risk of eye strain and neck/arm/back/shoulder pain from using themonitor for long periods of time, we suggest you to:1. Set the distance of the screen between 20 inches to 28 inches (50cm-70cm)from your eyes.2. Blink frequently to moisten your eyes or wet your eyes with water afterprolonged usage of the monitor.3. Take regular and frequent breaks for 20 minutes every two hours.4. Look away from your monitor and gaze at a distant object at 20 feet away forat least 20 seconds during the breaks.5. Perform stretches to relieve tension in the neck, arm, back, and shouldersduring the breaks.FCC notices (U.S. Only) and other regulatory information1. For FCC notices and other regulatory information, see the regulatorycompliance website located at www.dell.com/regulatory_compliance.