homerjkev

Hi there, I work at university and just making sure that our signs are legal. Around half our Fire exit signs are illuminated and many are not, it woud appear to be that they have not been maintained. Please see examples of attached images. I'm no expert but keen to learn little more around all aspects of fire safety. Are these lights classed as Sustained? And what's the difference to non sustained if I'm using the right terminology.. Many thanks Kevin