3 Pack smoke and carbon monoxide detectors powered by batteries, with digital display, smoke and carbon dioxide dual alarm sensors

3 Pack Smoke and Carbon Monoxide Detectors Powered by Batteries, with Digital Display, Smoke and Carbon Dioxide Dual Alarm Sensors, Easy to Install

• Built-in Electrochemical Sensor with High Accuracy and Infrared Photoelectric Sensor Helping to Reduce False Alarms.
• Carbon Monoxide Detector and Smoke Alarm Providing Whole-day Protection.
• Battery-powered Unit Can be Installed Quickly and Easily without an Electrician.