Simple Light

Its own description calls it a debugging light, and that is the honest way to use it. The turret over the door stays dead, a timer seems to do nothing, and you want to know where the power stops. Hang this lamp on the end of the line: if it glows, power gets that far and the fault is further on. If it stays dark, work back toward the source.

Nobody can craft or research it, so the 25 metal fragments and 100 wood listed beside it are never spent: it comes from loot or a trade. When one turns up, keep it in a box next to your electrics. It connects with the wire tool like any other device, and once the test is done you pull the wire out again.

As room lighting it does the job and little more. For the rooms you live in, a ceiling light looks better and stays out of the way, and a small battery at night has only so much to spend on lamps anyway.