Get Emergency Alerts! - Register your Cell Phone or VoIP Number On January 26, the Southern Marin Fire District will be partnering with the Marin County Sheriff's Office of Emergency Services to launch the new Telephone Emergency Notification System (TENS). What is TENS: TENS is a high-speed communications system that can quickly notify members of the public by phone of critical emergency information in situations where property or human life is in danger. These notifications are made to specific geographically affected areas. TENS makes emergency calls to landlines and to registered cell phones. In the event of an emergency, wherever you are, don't miss the critical call with information or instructions from the Marin County Office of Emergency Services. If you live, work or go to school in Marin County, and if you are 18 and over, you can receive these emergency alerts on your CELL PHONE by text, email...