Introducing our innovative and efficient Smoke & Carbon Monoxide 2-in-1 Alarm and Smoke, Heat & Carbon Monoxide 3-in-1 Alarm. Both alarms boast outstanding performance and provide comprehensive safety protection for your home and office. The Smoke & Carbon Monoxide 2-in-1 Alarm and Smoke, Temperature & Carbon Monoxide 3-in-1 Alarm are exceptional safety devices that offer a host of benefits, including smart home compatibility, wide application, user-friendly interfaces, eco-friendliness, and comprehensive support & warranty.