System expands up to 12 handsets accommodates other accessories such as the SD7501 black white handset SD7502 color handset SD7504 cameraintercom or SD7505 Bluetooth cell phone adapter - Item no. SD7561C no longer offered.
System expands up to 12 handsets accommodates other accessories such as the SD7501 black white handset SD7502 color handset SD7504 cameraintercom or SD7505 Bluetooth cell phone adapter