This compact carbon monoxide detector is ideal for those who want the safety and security of an early warning system against this odourless, deadly gas - without having an obtrusive, bulky detector fitted in their room. At only 45 x 80 mm it is 75% smaller than most other CO detectors and it can be fitted very discretely indeed. Yet, it contains a powerful sensor and an alarm that offers over 85 decibels of warning at the first detection of danger. Simple to install, using the screws provided, the detector includes a lithium battery that offers many years of protection and the detector contains a test button for periodic checks, a low-power battery alert and an end-of life warning. Important: This product contains highly sensitive components. Always make sure to store and/or use the product in working environments of between -10 and 40° Celsius.