DIY emergency light using UPS

[badkuk]

I've been wanting to assemble an emergency light using UPS as its power source. Masyado kasing madaling masira mga nabibiling emergency lights.

What I plan to do is mag latag ng wires from a single UPS to the different locations requiring emergency lights pag brownout. Ang hindi ko lang alam gawin is the trigger that will turn on the lights pag brownout. Anong device ang tawag sa trigger na ito? (if may power, the circuit is open, if nawala power, the circuit will be closed).

I'll be using LED bulbs for the lights para mas tumagal ang battery ng UPS.

Hmm, you'd somehow have to tap into the main power to check if there is power or not right? Better siguro if you can do this on the UPS side rather than have all the connected devices have this tap?

Perhaps some device between the UPS outlet and your devices can sense if there's no power, then send power to the devices if there's none(sort of a switch)?

i'll be watching this thread ^_^