Clarity 52510100 AL10 AlertMaster w/ Door Knock

Clarity AlertMaster visual alert system with door knocker Wirelessly connects to remote accessory units (sold seperately) Bright, flashing red alert light Phone call visual alert indicator Alarm clock visual alert indicator with snooze and vibrating alert Fire/burglar alarm visual alert indicator Doorbell Visual alert indicator Sound/baby monitor visual alert indicator Built-in lamp flasher Motion detector visual alert indicator CLARITY52510100