No, but the majority look pretty similar.
Fire Dept.
Smoke alarms may go off simultaneously due to a common trigger, such as smoke or fire in the vicinity. This can activate interconnected alarms in a building to alert occupants of potential danger.
Smoke alarms may go off simultaneously if there is a widespread presence of smoke or fire in the area where the alarms are installed. This can trigger all the alarms to sound at once to alert people of the potential danger and prompt them to evacuate the premises.
No this is an OSHA regulation and alarms are to be active at all times for the safety of employees / visitors
All alarms are not the same. Read and follow the instructions.
You should have a photo-electric smoke alarm in your house because they react more quickly to smoldering fire byproducts than most ionizing type smoke alarms. Having ANY type of smoke alarm is better than none, provided it has the necessary batteries and maintenance to actually work during a fire.
Smoke alarms may go off simultaneously due to a common trigger, such as smoke or high levels of heat. This can indicate a potential fire hazard and prompt immediate action to ensure safety.
No
No, not all fires are the same temperature. The temperature of a fire can vary depending on the fuel source and conditions.
Fire alarms go so far back in time we don't know when the first one was used. All people had to do was yell or bang on things. Ringing church bells were used.
You All Look the Same to Me was created in 2002.
They don't - they all look different. Why do you think they all look the same?