Quick view Carbon monoxide Alarm (DFL1DT001) Detects presence of carbon monoxide (CO). Compact size, for wall/ceiling mounting or free standing. Built in non replaceable 7 year battery, high quality long life sensor. 85dB alarm. 5 year guarantee CONSTRUCTION ABS FINISH White LENGTH ... £28.51 (Ex. VAT) £34.21 (Inc. VAT) Add to Cart Compare