smoke and carbon monoxide detector with LCD screen, 100% brand new

General Description This 2-in-1 smoke and carbon monoxide detector combines an electrochemical CO sensor and a photoelectric smoke sensor, effectively detecting smoke from smoldering fires while reducing false alarms. Featuring a clear LCD screen, a test function, and a powerful 80 dB alarm, it provides reliable home safety monitoring and is easy to install. Key Features Dual detection: electrochemical carbon monoxide sensor + photoelectric smoke sensor, optimized for smoldering fires Test button: checks alarm functionality with a simple press LCD screen: displays real-time CO concentration, battery level, and operating status Easy installation: stand mounts, no wiring required Powerful 80 dB alarm: alerts when smoke or CO levels exceed safety limits Powered by 3 AA batteries (not included) Specifications Material: ABS Color: White Dimensions: 11 × 11 × 4 cm Weight: 100 g / 200 g Operating temperature: -20 °C to +50 °C Alarm volume: 80 dB Package contents 1 carbon monoxide and smoke detector or 2 carbon monoxide and smoke detectors