240V DC to switch on 12V

Thread Starter


Joined Mar 3, 2016

I'm in the need of something to switch on a 12V light and horn when a 240V DC circuit trips. This is to give an alarm telling us we lost the 240. I guess it will need a 12 V condensator or battery to power the light and horn. A condensator would be great so that we dont have to worry about batteries. Could a condensator power a rotating light for 30 min? Like the ones on a truck. This unit will need to be connected in line with the 240. There is no other power source to feed that light either.
Marius Notøy