Battery operated carbon monoxide and smoke detector set

A set consisting of two detectors: 1 carbon monoxide detector OR-DC-619 - alarm device designed for continuous monitoring of the concentration of carbon monoxide In case of threat, detection sensor triggers an alarm visual and sound 2 smoke detector OR-DC-609 - the photoelectric sensor located in unit detects visible smoke produced in the initial, flameless stage of fire In case of threat, detection sensor triggers a visual and sound alarm.