Make sure you never miss another call because you didn't hear the phone ring! The 95+ dB Clarity ST100 Super Loud Telephone Ringer works with standard, analog phones. It also features adjustable ring volume and ringtone control from 250 Hz–1,200 Hz.
95+dB
Adjustable ring volume
Adjustable ring tone control 250Hz–1.2kHz
2 modular phone jacks for easy connection to a standard analog telephone