QS5210-840 SKU QS5210-840-6409 QOL QS5210-840 IQ CO Carbon Monoxide detector 3V Battery Powered. Alarm/ Tamper/ and Battery Conditions. Wall or ceiling mounted. Connects using RF Security 319.5MHz. 5 year battery life (from the date of manufacture). Each. MC/20 Please log in to see price or purchase this item Request an account (0)No Reviews yet Line Comment Special Price Ratings & ReviewsNo reviews availableBe the first to Write a Review