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• Do not place this device directly under sunlight or near heaters. • Do not place this device near water. • Keep the camera away from acid or alkali gas. • Do not place this visual presenter in humid, dusty, windy or vibrant locations. • The recommended operating environment is: • Temperature: 0.C - 45.C (32.F - 113.F) • Humidity: Less than 75% • Always unplug BEFORE cleaning the device. Use a damp soft-cloth for cleaning. Do not use volatile solvent. • When this equipment functions abnormally,