Kidde Detect Smoke + Carbon Monoxide Alarm Hardwired with Battery Backup

Got a couple of Kidde alarms here. One is a 10-year sealed battery smoke alarm (photoelectric sensor) and the other is a hardwired smoke and carbon monoxide detector with a battery backup. Both are still in the boxes, though the boxes have some wear from being moved around. Good to have if you're upgrading your home safety or need to meet code. Selling them together or separate! $30 each. * I have three smoke alarms & 3 carbon monoxide detectors available! These are $65+ new! A 3 pack is $160