The amplicom powertel pt500 cordless dect home phone conforms to the dect gap standard and can support up to four handsets on one base stationthe pt500 big button cordless home phone is hearing aid compatible with extra loud 30db speaker volume and tonal adjustment with 3 memories user profiles and has a 90db adjustable ringing volumethe easy to use cordless home phone has an extra large clear black on orange display and a 200 memory name and number phonebookthe pt500 handset has up to 100