What is this ?
image=https://photos1.similarworlds.com/00/00/00/00/02/14/42/71/ThoughtfulandSincere-eQOQj0cnUmRxsog.jpg]
41-45, F
This page is a permanent link to the reply below and its nested replies. See all post replies »
it looks like a battery-backed emergency illumination system to me. e.g. the lights stay off and batteries in the system are [probably drained and] recharged unless the building power is lost, then the batteries cut in and power the lights so people can get out with relative ease.