If you have an existing BT Synergy 4100, or BT Synergy 4500, you can actually add up to 5 handsets in total. As the additional phone is cordless, it is a great way of having another phone in a separate location, without having to plug into a telephone line.
The additional handset for the BT Synergy 4100, and 4500, is the BT Synergy 4000. It is supplied with its own stand alone charger, which it can sit in when not in use.
BT Synergy 4000 Features
The BT Synergy 4000 additional handset and charger has all the same features as the original Dect phone. It has the same distinctive blue backlit display, as well as the 255 name and number directory.
The BT Synergy 4000 additional handset have the same range from the base station as the original phone. This means you can locate the extra handset anywhere your current BT Synergy phone works.
Benefits of Extra Cordless Handsets
When extra BT Synergy 4000 cordless handsets are added to an existing Synergy system, it actually creates a small telephone system. Each of the BT Synergy 4000 handsets have the ability to pick up calls, transfer them, and make internal calls between each other.