Carbon monoxide detectors; Device for testing the function and effectiveness of smoke detectors, carbon monoxide detectors and heat detectors featuring an aerosol spray; Fire-extinguishers; Gas detectors for detecting the presence of gas; Leak detecting device for water supplied home appliances consisting of water sensor, control unit with audible alarm and water valves; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Se...