by Sonic Alert

Please Note: Phone Signalers are designed for use on ANALOG phone lines only. Do not connect a Phone Signaler to a DIGITAL phone line. Digital phone technology can damage the Phone Signaler and void both the manufacturer's warranty and HSDC's 30-day return policy. For more information, click here.
• Built-in telephone cord plugs into an empty phone jack or dual adapter (not included)
• For use with analog, home phone lines, will not work on digital, office, phone systems
• Does not transmit to remote receivers
• Tone control ranges from 200-2,000 Hertz
• Audio alarm volume adjustable from 78-85 dB at a low frequency up to 113 dB at a high frequency
• 4.5" x 3" x 1.5"
• Five year warranty
• For more information, click here to read the User Manual (PDF format)