Williams Sound Ringmax Amplified Ringer

The attractive ringer is the first amplified telephone ringer that allows you to customize the ring to make it easier for you to hear. You can quickly and easily increase the ring volume and set the tone and "warble" to whichever pitch is best for you.  Four specially selected tone settings emphasize those frequencies easiest to hear. Perfect for the shop, garage, or other noisy environments.

Features:

• Line powered, no adapter needed
• Amplifies ring signal up to 95 dB
• Y-jack and phone cord included
• 4 AA batteries included
• 4 volume settings
• 4 tone settings
• Built-in visual signaler