Specifications: Color: White Material: ABS Power supply: 3 * 1.5V AA battery (not included) Battery capacity: low battery alarm Static current: 80uA Alarm current: 30m Alarm voice: intelligent human voice prompt Sensor: electrochemical carbon monoxide sensor and infrared photoelectric sensor Temperature: 0℃- 50℃ Relative humidity: 10-95% Carbon monoxide detection sensor: 000-999ppm Smoke sensor: 0.1% db/m - 9.9% db/m Alarm indication: LCD display, light/sound alert Size: 104 x 39 mm Package size: 10.5 * 10.5 * 4cm Package weight: 180g 1 * Smoke and carbon monoxide detector 1 * Annual Notes: 1. The detector is easily affected by strong shock and impact during transportation or installation, which will cause it to stop working. 2. It is a combination carbon monoxide and smoke detector, it cannot detect combustible gases (such as liquefied petroleum gas, natural gas, methane, etc.). 3. Scheduled maintenance: surface cleaning every month, specialized inspection every six months. 4. Do not