Gas detected: Carbon monoxide (CO)Sensor life: 10 yearsPower supply: Long-life lithium battery, 3 V, sealed for the life of the product (no replacement required)Installation: Wall-mounted, ceiling-mountedAudibility: 85 dB at a distance of 3mSensor technology: Electrochemical cellDevice type: Type-BOperating environment: Ambient temperature -10 degrees C to +40 degrees CAmbient humidity: 25 - 95% RH (non-condensing)Storage and transport environment: Ambient temperature -15 degrees C to +45 degrees CAmbient humidity: 20 - 95% RH (non-condensing)IP protection class: IP44