EMERGENCY ALERT SYSTEM RECEIVERTM (EAR)
Federal Signal Corporation: Allows local authorities to communicate emergency information directly to individuals and groups at public gathering areas. Alerts with audible beep and proceeds with local emergency public address announcement. Frequency and address codes programmable to user specifications. Supports DTMF, two-tone sequential, and specific area message encoding. Can program multiple address codes. Monitors radio traffic from local emergency operations center. (800) 548-7229.