Carbon Monoxide Detector XC01-R with Digital LCD Display and Replaceable Battery The X-Sense XC01-R Carbon Monoxide Detector provides reliable protection against CO poisoning with its advanced Figaro electrochemical sensor and real-time LCD display. Featuring a replaceable 5-year battery, this detector offers both high accuracy and reliability, alerting you with an 85 dB alarm at the first sign of danger. The informative LCD shows the current CO levels and recalls the highest detected concentration, ensuring you stay informed. Brand: X-Sense. STICKER: OH002.05-00000037-48. Note: This item is an Amazon/Walmart customer unused or gently remorse return. It has been inspected and may or may not have been repackaged.