Heiman Carbon Monoxide Detectors, Nano-Sized Portable CO Alarm Battery Powered, UL 2034 5th Certified, 10-Year Battery Figaro Sensor, 85 dB, Test Button, Small CO Detector for Home Travel Vehicle RV

Heiman Smoke Detector, Photoelectric Fire Alarm, 10-Year Battery Powered Smoke Alarms for Home, UL 217 10th Ed. Certified, Portable Small Compact, Test Silence Button & Low Battery Warning, RV, Travel

Heiman Smoke Alarm, Wireless Interconnected Photoelectric Battery Operated, Ul 217 10th Certified, Interlinked Portable Mini for Home Indoor Residential, 5 Pack