Tristar Double BT Telephone adaptor.This TriStar white double adaptor is Converting a single telephone socket into a double BT plug to 2 x BT sockets.

Tristar BT & RJ11 modem Master in-line adaptor.This TriStar white master in-line adaptor is Converting an RJ45 Outlet to a PABX BT type connection for an analogue device like a fax machine.

Tristar BT & RJ11 modem Secondary in-line adaptor.This TriStar white secondary in-line adaptor is Converting an RJ45 Outlet to a PABX BT type connection for digital devices like a digital phone.