Home alerting and signaling devices can monitor your doorbell, telephone, a baby cry, alarm clock and signal the user with a pager, flashing lamp or bed shaker.
Accessories are organized by brand.
Serene CentralAlert CA-360 Notification System
Sonic Alert HomeAware With Built-In Smoke & CO Listener & Bed Shaker - HA360MVSB2.1
Sonic Alert HomeAware With Bed Shaker - HA360M2-1