AL10 AlertMaster (CLARITY-52510) - Clarity AlertMaster visual alert system; Wirelessly connects to remote accessory units (Accessory units NOT included - sold separately); Large, lit button to easily turn nearby lighting On or Off; 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; Simple set up - no hardw Manufacturer Warranty: 1 Year