Wireless battery combo - Smoke detector - Carbon monoxide，

LCD Screen: Clearly displays real-time carbon monoxide (CO) and smoke levels in the ambient air, providing real-time monitoring to protect you and your family. Accurate and Reliable High-Sensitivity 2-in-1 Alarm: Equipped with a photoelectric smoke sensor and an electrochemical CO sensor, operating independently; every second counts; detects both fast-burning and slow-burning fires, and detects dangerous concentrations of smoke or carbon monoxide. Alerts you instantly while minimizing false positives; provides ultimate protection against two deadly threats, all in one unit. Suitable for any location where carbon monoxide may be generated, such as the kitchen, bedroom, bathroom, or hotel. Also useful when enjoying a barbecue, using charcoal grills, or parking in your car, etc.