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2. Thermal cutoff - Wikipedia

   en.wikipedia.org/wiki/Thermal_cutoff

   A thermal switch (sometimes thermal reset or thermal cutout (TCO)) is a device which normally opens at a high temperature (often with a faint "plink" sound) and re-closes when the temperature drops. The thermal switch may be a bimetallic strip , often encased in a tubular glass bulb to protect it from dust or short circuit .

3. Limit switch - Wikipedia

   en.wikipedia.org/wiki/Limit_switch

   A limit switch with a roller-lever operator; this is installed on a gate on a canal lock, and indicates the position of a gate to a control system A limit switch mounted on a moving part of a bridge In electrical engineering , a limit switch is a switch operated by the motion of a machine part or the presence of an object.

4. Roller hearth furnace - Wikipedia

   en.wikipedia.org/wiki/Roller_hearth_furnace

   Roller hearth furnaces are built with two openings opposite each other to allow items to pass into, through and out of the furnace while moving in one direction. Depending on their application and operating temperature they may contain either a conveyor belt or furnace rollers for the movement of items through the furnace.

5. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   The heating elements activate one at a time to avoid overloading the electrical system. Overheating is prevented by a safety switch called a limit controller or limit switch. This limit controller may shut the furnace off if the blower fails or if something is blocking the air flow.

6. Editorial: Bay Area making climate change history by phasing ...

   www.aol.com/news/editorial-bay-area-making...

   Bay Area regulators' plan to adopt the nation's first rules phasing out sales of gas-fueled water heaters and furnaces in favor of zero-emission electric heat pump models should be replicated ...

7. How many times did The Beatles break up? - AOL

   www.aol.com/why-did-beatles-break-inside...

   Over the years, fans have pointed to different reasons why The Beatles broke up, but it seems that the band simply grew apart and no longer shared the same vision after eight years together.