Features 1、SENSITIVE SMOKE DETECTOR: Our standalone temperature sensitive fire detector offers high sensitivity, stable performance, and low power consumption. 2、360° SMOKE DETECTION: With a wide detection range, the detector's indicator light starts flashing when the temperature arrives the alarm threshold. After confirming a genuine fire, it illuminates a red indicator light and emits an alarm. 3、LOUD ALARM SYSTEM: Our smoke detector produces an 80dB alarm within a 3 meter range, ensuring timely alerts to defend you, your family, and your property. 4、CO ALARM: Equipped with an advanced gas sensitive sensor, the detector quickly detects and alerts to prevent false alarms or omissions. 5、FLAME RETARDANT MATERIAL: Our CO alarm is made of flame retardant ABS material, ensuring high temperature resistance and no deformation. Specification Item Type: Smoke Detector CO Detector Set Material: ABS CO Detector Battery Type: 3 x AA Batteries (not included) Smoke Detector Battery Type: 1 x 9V 6F22 Battery (included) Smoke Detector Battery Capacity: 280mAh Smoke Detector Parameters: Volume Level: >80dB Type: A2R Operating Temperature: -10℃ to +50℃ Relative Humidity: <95%RH (40℃ ± 2℃) Output: Audible and Visual Alarm CO Alarm Parameters: Sensor Lifespan: 2 years Alarm Sound: 85dB Operating Temperature: -10℃ to +50℃ Relative Humidity: <95%RH Package List 1 x Smoke Detector 1 x CO Detector 4 x Expansion Screws 4 x Screws 2 x User Manual