Overview: A thoughtful gift, also ideal for warehouse, factory or any noisy environment. Don't miss another call! Krown's Amplified Ringer with Strobe Light monitors your phone line for incoming calls. When receiving a call, the K-RA005 will alert you with a 120 dB amplified ringer, and bright flashing strobe light. Features: * Adjustable ringer, up to 120 dB * Ringer operated by line power * Ringer hi/mid/low switch * Powerful strobe light * Tone control hi/low switch * Line triggered strobe light * AC Adapter included - output 6V/1000MA * Easy Installation * Wall mountable * 3 AA batteries required for backup, not included * 1 year Manufacturer's * Dual telephone jacks.