I just installed an attic AC system. I said I would put a hard wired smoke alarm in the attic. It's not code in philadelphia to install one, but I promised the customer. The problem is there is not 115 VAC in the attic. I had the electrician run 230 volts for the air handler. Is there a 230v smoke alarm available. How much is it(approx)? I tried Home Depot and Lowes, but they do not sell 230 v smoke alarms. Maybe an electrical supply will have one?

I would appreciate any help.