Standard fire alarms may not wake up people with hearing loss.  The first of its kind; the Lifetone HL™ Bedside Fire Alarm and Clock uses a 520 Hz square-wave sound pattern proven by the Fire Protection Research Foundation to be more effective at alerting and awakening people with hearing loss, seniors, children, and heavy sleepers than standard fire alarms. The Lifetone HL is both a state of the art fire alarm and an attractive and easy to use alarm clock. The patented Lifetone HL™ sensor listens for your existing smoke alarms and then broadcasts its low frequency, 520Hz square wave sound pattern. Be protected. The Lifetone HL™ helps ensure a life-saving environment for you and the ones you love.

• Uses 520 Hz square-wave sound pattern – a lower frequency than traditional smoke alarms
• Hears your existing T3 smoke alarms. No new alarms are required
• Battery backup lasts 7 days or more while providing emergency alarm signals
• Alerts to AC power loss and low or no battery
• Alerts to unplugged or improperly connected bed shaker
• Functions as a standard alarm clock
• Two year limited warranty
• Measuring 8 1/2” L x 5” W x 4” H the HL fits anywhere
• BONUS: Free water-resistant bed shaker