Product details:

Carbon monoxide alarm, with digital display plug-in with battery back up. Digital readout gives continuous display of CO levels; react before harmful levels are reached. Low levels may indicate a CO problem; peak level memory recalls the last highest recorded level of CO. Press the peak level button to check if CO was detected while you were away.Features: 10 year life from the time of activation Digital readout Peak level memory Easy to install just plug into an AC wall outlet Battery backup protection in case of power failure Specifications: Dimensions (L x W x H): 6.5 cm x 19 cm x 26 cm (2.56 in. x 7.48 in. x 10.24 in.) Weight: 0.34 kg (0.74 lbs.)