Geemarc CL100 Loud Big Button Corded Telephone- UK Version
Receiving volume gain +30dB
Receiving tone gain +/-10dB
Speech volume gain +/-4dB
Geemarc PHOTOPHONE 100 Loud Big Button Photo ID Corded Telephone- UK Version
£32.97Amplified adjustable ringer volume up to 80dB
Adjustable receiving volume upto 30dB
Big button keypad