The Clarity AlertMaster AL10 is an all-in-one signal system designed to alert individuals who are deaf or hard of hearing to environmental sounds. The system uses a flashing lamp, bed shaker, and a panel of lights to alert the user(s) to different sounds, including a telephone ring, a doorbell, audio alarm devices, an alarm clock, a baby cry, someone entering the home, and loud room noises such as a smoke detector. The system features a wireless receiver which can be purchased separately, a 3.5-inch clock display, adjustable display brightness, and dual power backup that keeps the system running when the power is out. The system includes a base unit, a bed shaker with cord, a doorbell transmitter, and a personal page switch. OPTIONS: An audio alarm transmitter, a baby sound monitor, a door announcer, a personal signaler, and a motion sensor. POWER: Uses standard 120 volt power outlet, and has a rechargeable battery backup. WARRANTY: One year limited warranty.