Xintex carbon monoxide detector With generator safety shut off this does not include original packaging mounting plate or front cover ...Please ask questions through eBay.... This is a great price for this co detector original Price 169.95  this detector is used in many marine applications. This is a Great deal for someone that needs to replace their internal circuit board. It is very easy remove your outer cover unplug the wire connectors from the old board remove old board and snap new one in your existing mounting plate plug wire connectors back in replace front cover and your ready to go. This is brand new and never used.