50810 Walker In Line Amp PEARL- In-line receiver amplifier-Makes low volume- Compatible with electronic and standard telephone-Complete with plug-in power supply-Easy to install-Installs between the handset and telephone-Rotary volume control numbered 1-9-Users with normal hearing should not go above 3-Improves volume up to 20dB-Do not connect directly to a telecommunication network-Pearl- W1010
