TR100 Sonic Alert Telephone Signaler:

Product Features

• Easily plugs into any AC outlet & modular phone jack
• Sound horn has an adjustable tone and volume control
• Transmits to other Sonic Alert receivers for notification in more than one room
• Able to send a signal to all Sonic Alert remote receivers (SA101, SA201, BL300, RH100, SONIC BOOM SB1000 CLOCK). Purchased separately.For use with analog, home phone lines, will not work on digital, office, phone systems
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• U.L. Listed
• 5-year limited manufacturer's warranty