User's Manual
![](/manual/serene-innovations/ca1/user-s-manual-english/images/img-3.png)
2.
CentralAlert
TM
Features:
• 2.4 GHz technology - 360° full coverage of your entire home.
• An audio alarm, bright flasher, visual icons, and a bed-shaker to alert you
to daily sounds: alarm clock, doorbell, phone/cell/video calls/fax,
smoke/gas alarms, a baby’s cry, a weather warning, a motion sensor, and
more.
• A large, easy-to-see clock with dual alarms.
• Dual bed shaker output jacks (one bed shaker included).
• No installation needed - just “plug and use.”
• Two phone jacks for separate telephone/fax/video phone.
• Weather resistant, easily installed wireless doorbell included.
• A battery powered back-up (batteries not included).
Note:
* A June 2007 study by the Fire Protection Foundation found that a low
frequency square wave signal (such as 520 Hz) is most effective in alerting a
hard-of-hearing person.