This switch box is easy to use. It is clearly labeled on the back. I used it to switch my phone line between my FAX and telephone. It provided me a positive way to keep my FAX off line until I want to send or receive a FAX.
Switchbox works great - but the item color is way off. In the picture it looks like a light beige color, but the product itself is a darker yellowish/greenish color. The color reminds me of the old school rotary telephones from the 1970's.
PROS: The A/B Switch Box fit our needs perfectly. It allowed us to switch between a phone & fax line easily. The switch box has a place for us to label the box A - Phone and B - Fax which eliminates confusion of which mode the line is in. I give the A/B switch box a 10 rating for price, function and product.