This is an old computer accessory.
A device that connects an incoming telephone line between a telephone and a fax machine. Automatically.
It was manufactured in Taiwan after an old US patent.

I offer it in a brand new, original box. There is also a power supply in the box and a separate "Fax Angel".
The box is a bit shabby, the colors are pale. Inside, the device is completely new.

How to use? On the side of the box is the description! (I don't know anymore because I've never used a tool like this!)
Specifically a collectible piece for fans of early computing.

I can't try or test, it certainly works flawless. But it stood in the packaging for 30 years.
This is important to know, that is why I do not undertake any guarantee, refund or other guarantee!