Ulisem 2-in-1 Smoke and Carbon Monoxide Detector - Fire Protection and CO Safety

Power supply: 3 * 1.5V AA batteries; Maximum static current: 80uA; Maximum alarm current: 30mA; Alarm signals: Visual/audible prompt; Sensor: Electrochemical carbon monoxide sensor and infrared light bar; Temperature: 0 to 50°C; Relative humidity: 10-95%; Carbon monoxide sensor detects concentration: 000-999 PPM; Sensitive smoke detector: 0.1% dB/m - 9.9% dB/m; Alarm display: LCD screen, visual/audible announcement; Battery capacity: Low battery alarm; Dimensions: 104 * 39 mm; Package list: 2 * Combination smoke and carbon monoxide alarms; 2 * Mounting screw sets; 2 * User manuals; Function: 1. Combination smoke detector and carbon monoxide detector; 2. LCD display of PPM concentration; 3. High-precision electrochemical sensor and infrared light bar; 4. Easy installation, no debugging required.