Gas alarms; parts and accessories for gas alarms; gas alarms having telecommunication functions; gas alarms having voice activated audio speaker; gas alarms having voice activated lighting apparatus; gas alarms having voice activated audio speaker and lighting apparatus; gas alarms having emergency lights for power failure and night lights; gas leak alarms; parts and accessories for gas leak alarms; gas leak alarms having monitoring functions; gas leak alarms having telecommunication functions; gas leak alarms having voice activated audio speaker; gas leak alarms having voice activated lighting apparatus; gas leak alarms having voice activated audio speaker and lighting apparatus; gas leak alarms having emergency lights for power failure and night lights; carbon monoxide alarms; parts and accessories for carbon monoxide alarms; carbon monoxide alarms having telecommunication functions; carbon monoxide alarms having voice activated audio speaker; carbon monoxide alarms having voice activated lighting apparatus; carbon monoxide alarms having voice activated audio speaker and lighting apparatus; carbon monoxide alarms having emergency lights for power failure and night lights; fire alarms; parts and accessories for fire alarms; fire alarms having telecommunication functions; fire alarms having voice activated audio speaker; fire alarms having voice activated lighting apparatus; fire alarms having voice activated audio speaker and lighting apparatus; fire alarms having emergency lights for power failure and night lights; smoke alarms; parts and accessories for smoke alarms; smoke alarms having telecommunication functions; smoke alarms having voice activated audio speaker; smoke alarms having voice activated lighting apparatus; smoke alarms having voice activated audio speaker and lighting apparatus; smoke alarms having emergency lights for power failure and night lights; incomplete combustion alarms; parts and accessories for incomplete combustion alarms; incomplete combustion alarms having telecommunication functions; incomplete combustion alarms having voice activated audio speaker; incomplete combustion alarms having voice activated lighting apparatus; incomplete combustion alarms having voice activated audio speaker and lighting apparatus; incomplete combustion alarms having emergency lights for power failure and night lights; air pollution indicator alarms; parts and accessories for air pollution indicator alarms; air pollution indicator alarms having telecommunication functions; air pollution indicator alarms having voice activated audio speaker; air pollution indicator alarms having voice activated lighting apparatus; air pollution indicator alarms having voice activated audio speaker and lighting apparatus; air pollution indicator alarms having emergency lights for power failure and night lights; gas leak detectors; parts and accessories for gas leak detectors; gas leak detectors having telecommunication functions; gas leak detectors having voice activated audio speaker; gas leak detectors having voice activated lighting apparatus; gas leak detectors having voice activated audio speaker and lighting apparatus; gas leak detectors having emergency lights for power failure and night lights; fire detectors; parts and accessories for fire detectors; fire detectors having telecommunication functions; fire detectors having voice activated audio speaker; fire detectors having voice activated lighting apparatus; fire detectors having voice activated audio speaker and lighting apparatus; fire detectors having emergency lights for power failure and night lights; heat detectors; parts and accessories for heat detectors; heat detectors having telecommunication functions; heat detectors having voice activated audio speaker; heat detectors having voice activated lighting apparatus; heat detectors having voice activated audio speaker and lighting apparatus; heat detectors having emergency lights for power failure and night lights; gas detection alarms; parts and accessories for gas detection alarms; gas detection alarms having telecommunication functions; gas detection alarms having voice activated audio speaker; gas detection alarms having voice activated lighting apparatus; gas detection alarms having voice activated audio speaker and lighting apparatus; gas detection alarms having emergency lights for power failure and night lights; alarms and parts and accessories therefor; alarms having telecommunication function; alarms having voice activated audio speaker; alarms having voice activated lighting apparatus; alarms having voice activated audio speaker and lighting apparatus; alarms having emergency lights for power failure and night lights; gas alarming devices and parts and accessories therefor; gas alarming devices having telecommunication function; gas alarming devices having voice activated audio speaker; gas alarming devices having voice activated lighting apparatus; gas alarming devices having voice activated audio speaker and lighting apparatus; gas alarming devices having emergency lights for power failure and night lights; alarm systems comprised primarily of detector unit and alarm unit for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat, and parts and accessories therefor; alarm systems comprised of detector unit and alarm unit for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated audio speakers; alarm systems comprised of detector unit and alarm unit for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated lighting apparatus; alarm systems comprised of detector unit and alarm unit for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated audio speakers and lighting apparatus; alarm systems comprised of detector unit and alarm unit for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having emergency lights for power failure and night lights; detectors for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat; detectors for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated audio speakers; detectors for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated lighting apparatus; detectors for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated audio speakers and lighting apparatus; detectors for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having emergency lights for power failure and night lights; alarms for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat; alarms for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated audio speakers; alarms for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated lighting apparatus; alarms for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having voice activated audio speakers and lighting apparatus; alarms for alarm systems for detecting and alerting the presence of gas, smoke, sparks, fire, odor or heat having emergency lights for power failure and night lights; gas leak alarm systems and parts and accessories therefor; gas leak alarm systems having monitoring functions; gas leak alarm systems having telecommunication functions; gas leak alarm systems having voice activated audio speaker; gas leak alarm systems having voice activated lighting apparatus; gas leak alarm systems having voice activated audio speaker and lighting apparatus; gas leak alarm systems having emergency lights for power failure and night lights; centralized monitoring alarm systems for multiple gas leak alarms installed separately and their parts and accessories; centralized monitoring alarm systems for multiple gas leak alarms installed separately, having voice activated audio speakers; centralized monitoring alarm systems for multiple gas leak alarms installed separately, having voice activated lighting apparatus; centralized monitoring alarm systems for multiple gas leak alarms installed separately, having voice activated audio speakers and lighting apparatus; centralized monitoring alarm systems for multiple gas leak alarms installed separately, having voice activated emergency lights for power failure and night lights; centralized gas monitoring alarm systems having gas circuit breaker and ventilator, and their parts and accessories; centralized gas monitoring alarm systems having telecommunication functions and parts and accessories therefor; centralized gas monitoring alarm systems having voice activated audio speakers; centralized gas monitoring alarm systems having voice activated lighting apparatus; centralized gas monitoring alarm systems having voice activated audio speakers and lighting apparatus; centralized gas monitoring alarm systems having voice activated emergency lights for power failure and night lights; monitoring alarm systems for security and disaster prevention and their parts and accessories; monitoring alarm systems for security and disaster prevention having voice activated audio speakers; monitoring alarm systems for security and disaster prevention having voice activated lighting apparatus; monitoring alarm systems for security and disaster prevention having voice activated audio speakers and lighting apparatus; monitoring alarm systems for security and disaster prevention having voice activated emergency lights for power failure and night lights; application software for smartphones, tablet computers and computers, for displaying and transmitting information sent from gas alarms, gas leak alarms, carbon monoxide alarms, fire alarms and incomplete combustion alarms and for sending warning information; application software for smartphones, tablet computers and computers, for setting up, managing and controlling gas alarms, gas leak alarms, carbon monoxide alarms, fire alarms and incomplete combustion alarms; application software for smartphones, tablet computers and computers, for displaying and transmitting information sent from fire alarms, air pollution indicator alarms, gas leak detectors, fire detectors, heat detectors and gas detection alarms and for sending warning information; application software for smartphones, tablet computers and computers, for setting up, managing and controlling fire alarms, air pollution indicator alarms, gas leak detectors, fire detectors, heat detectors and gas detection alarms; application software for smartphones, tablet computers and computers, for displaying and transmitting information sent from gas alarming devices and for sending warning information; application software for smartphones, tablet computers and computers, for setting up, managing and controlling gas alarming devices; application software for smartphones, tablet computers and computers, for displaying and transmitting information sent from monitoring alarm systems for security and disaster prevention and for sending warning information; application software for smartphones, tablet computers and computers, for setting up, managing and controlling monitoring alarm systems for security and disaster prevention; application software for smartphones, tablet computers and computers, for displaying and transmitting information regarding abnormality of indoor environment and inhabitant sent from alarm systems and for sending warning information; application software for smartphones, tablet computers and computers, for setting up, managing and controlling alarm systems for detecting and warning abnormality of indoor environment and inhabitant; application software for smartphones, tablet computers and computers, for displaying and transmitting information sent from alarm systems and for sending warning information; application software for smartphones, tablet computers and computers, for setting up, managing and controlling alarm systems; application software for smartphones, tablet computers and computers; downloadable computer software; computer software (recorded); sensors; gas sensors; gas concentration measurement sensors; gas detection sensors; gas leak detection sensors; sensor units for measuring gas concentration, comprised primarily of circuit boards and gas sensors; sensor units for detecting the presence of gas comprised primarily of circuit boards and gas sensors; interchangeable sensor units for gas detector; carbon monoxide sensors; fire sensors; smoke sensors; temperature sensors; humidity sensors; intruder detection sensors; carbon monoxide detectors; measuring or testing machines and instruments; wireless repeaters; repeaters for gas leak alarm; wireless routers; gateway routers; frequency converters; radio communication machines and apparatus; telecommunication machines and apparatus; computer programs; electronic computer and data processing machines and apparatus, and their parts and accessories