Combo Smoke and Carbon Monoxide Detector, alerts and warns people to stay away from the danger area when detecting. The alarm also emits continuous beeps when smoke and carbon monoxide are detected at the same time. Suitable for detecting smoke in , store, hotel, restaurant, office, etc. Combined CO and smoke detector, long life sensor, low power consumption. Specifications: Material: ABS Color: White Static Current: Less than 80uA Alarm Current: Less than 30mA Sensor: Electrochemical carbon monoxide sensor and infrared photoelectric sensor Temperature: 0 ~ 50 ° C Humidity: 10 ~ 95% The CO sensor detects the concentration 000 ~ 999PPM Smoke Sensor Sensitive: 0.1% db/m ~ 9.9% db/m Alarm Indication: LCD display, light/sound prompt Alarm Intensity: Over 80db Power Supply: 3 x 1.5V AA batteries (not included) Item Size: 10.5 x 3.5cm / 4.1 x 1.4inch (D x H) Package Contents: 2 x Combination Smoke Detector 2 x Accessories 2 x English User Manual Only the above package content, other