Telephone Ringer Amplifier by Connected Essentials - Loud Ringer with Bright Flashing Light EASY INSTALL - Plug & Play with No Installation or Batteries Required LOUD - Ringer Amplifier up to 95dB So You Never Miss a Call BRIGHT - Bright Flashing Light as Standard SMALL - External Ringer with Compact Design COMPATIBLE - Plugs Directly into a Standard Telephone Wall Socket