313Operating EnvironmentRemember to follow any special regulations in force in anyarea, and always switch your mobile device off whenever it isforbidden to use it, or when it may cause interference ordanger. When connecting the mobile device or any accessoryto another device, read its user's guide for detailed safetyinstructions. Do not connect incompatible products.Using Your Mobile Device Near Other ElectronicDevicesMost modern electronic equipment is shielded from RadioFrequency (RF) signals. However, certain electronicequipment may not be shielded against the RF signals fromyour wireless mobile device. Consult the manufacturer todiscuss alternatives.National Institute on Deafness and OtherCommunication DisordersNational Institutes of Health31 Center Drive, MSC 2320Bethesda, MD 20892-2320Email: nidcdinfo@nih.govInternet:http://www.nidcd.nih.gov/National Institute for Occupational Safetyand Health (NIOSH)395 E Street, S.W., Suite 9200Patriots Plaza BuildingWashington, DC 20201Voice: 1-800-35-NIOSH(1-800-356-4674)1-800-CDC-INFO (1-800-232-4636)Outside the U.S. 513-533-8328Email: cdcinfo@cdc.govInternet:http://www.cdc.gov/niosh/topics/noise/default.html1-888-232-6348 TTY