The SafeAwake Fire Alarm Aid provides essential protection for deaf and hard of hearing people in the event of a fire. Once an existing T3 smoke alarm is activated, the SafeAwake alerts you by vibration with the bed shaker and loud audible alarm (T3 smoke alarm not included). Sleep peacefully while feeling confident that you will wake up when your T3 smoke detector is activated. The SafeAwake Fire Alarm Aid works with existing smoke detectors to provide essential protection for deaf and hard of hearing people, or those who might not wake up to the standard audible alert of an ordinary smoke detector. SafeAwake is not a smoke detector. This product is only designed to work with smoke alarms that emit a T3 alarm pattern (three beeps followed by a pause). It will not work with alarms that emit a continuous tone pattern with no pauses. If you are uncertain as to which pattern your smoke alarm uses, please contact us for assistance. Once your T3 smoke detector is activated, the SafeAwake alerts you with bed shaker, a flashing white light and a high decibel, low frequency (520Hz) alarm. This 520Hz tone has been proven to be significantly more effective at waking those with mild to severe hearing loss when compared to the standard domestic and commercial smoke alarm audible signal which currently produces a 3000Hz signal. Features: Intermittent bed shaker: 18% more effective than continuous signal bed shakers for alerting the hard of hearing Low frequency 520Hz sound: 30% more effective than high frequency sound (3 200Hz) for the hard of hearing Fast sound reception for smoke alarms with T3 sound Indicator light tells user that SafeAwake is active Plug-in power supply with battery backup provides continuous notification of operating T3 smoke detectors Large Test button Auto Shutoff and Reset after 2 minutes UL 217 and UL1971 labels Versatility The SafeAwake Fire Alarm Aid provides notification for individuals of all hearing levels The bed shaker with 9ft cord is important for waking deaf individuals or sound sleepers who are asleep in bed, while the 520Hz low frequency alarm can aid those with high frequency hearing loss. The flashing light is intended to alert while awake. Universality The SafeAwake responds to any US domestic or commercial smoke detector manufactured after 1996 that requires the audible signal sound to emit an intermittent pattern in a standard temporal-3 (T3) audible format). Portability The device can be used in any domestic or commercial sleeping room equipped with standard smoke alarms within audible range with no need for any additional new fire detection equipment or hard-wiring. The product is a small 6" x 3" patented design device that is placed at a bedside nightstand or hung on a wall adjacent to the bed. Simplicity The user simply plugs into any 110-volt electrical bedside outlet and inserts the bed shaker under the mattress. Reliability SafeAwake includes three CR-123 lithium-ion batteries to provide backup power for up to 24 hours in the event of an electrical power failure. A low battery light lets you know when the battery needs to be replaced. Feature Details Brand SafeAwake Mfg part # SART 9V 1.0L Warranty Two year warranty Color Black Weight (lbs) 1.9 Battery operated? Yes (batteries required) Batteries included? Yes Battery details (3) 3VDC CR123 Lithium Ion Country of Manufacture United States System (no system / stand-alone) Alert Type(s) Vibration Flashing Light Loud Audible Low Vision / Deaf-Blind Yes Yes Yes No Transmitter / Receiver Transmitter Alert Trigger(s) Baby Cry Carbon Monoxide Mobile / Smartphone Doorbell / door knock Motion Pager / SOS Phone / VP Smoke / Fire Sound Severe Weather No No No No No No No Yes No No Expandable No Portable No Battery backup Yes USB charger No