carbon monoxide detector for 2014 raptor toybox

[pigpen1003]

I have a 2014 keystone raptor toybox trailer. the carbon monoxide detector went defective and I need a new one. the original detector was a Costar model 12RV-DB. It hard wires to the 12v system and has a batt backup. I can't seem to find a replacement for it. Kitty, first alert, I guess Costar is no longer? I was hoping someone can tell me where to look?

[Sjm9911]

If just a co detecter and not the gas detecter. I would get a new sealed 10 year one.

[pianotuna]

Hi,

Since the batteries last so long, I'd be tempted to just replace it with a "stand alone" unit.