Not been used before but is missing cables only comes with unit

Boost the sound of your phone ringer with the Ameriphone Super Phone Ringer Model SR-200 Telephone Ring Amplifier. This device is perfect for anyone who needs a little extra volume when their phone rings. Designed for universal compatibility, this ringer works with a wide range of phones. It comes in a sleek white color and has a maximum volume of 95+dB.