This is yet another device that will get you thinking, "Why haven't they invented this before?". Just plug in the In-Use Indicator with any phone and you're good to go. It is extremely useful in the office, where more often than not you pick up a phone only to eavesdrop on somebody's conversation accidentally. The In-Use Indicator will light up a red LED whenever the line is in use so you won't have to waste your time checking out whether the line is free or not. Some of the other advantages include saving up the costs involved when there is no interruption of fax and modem calls as well as preventing interruptions during personal calls. The In-Use indicator should be made standard with all phones, judging by its usefulness. You can purchase it for $14.95 today. It is powered by a single 9-volt battery.Pros : Saves time and money, indicates whether phone line is in use
Cons : Adds more clutter to workspace
In-Use Indicator Source
Comment Preview