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  2. Snowmelt system - Wikipedia

    en.wikipedia.org/wiki/Snowmelt_system

    A heated sidewalk in Holland, Michigan Installation of a geothermal snowmelt system on a street in Reykjavík, Iceland.. A snowmelt system prevents the build-up of snow and ice on cycleways, walkways, patios and roadways, or more economically, only a portion of the area such as a pair of 2-foot (0.61 m)-wide tire tracks on a driveway or a 3-foot (0.91 m) center portion of a sidewalk, etc.

  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. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    While the majority of these pumps mount nearest to the hot water heater and have no adjustable temperature capabilities, a significant reduction in energy can be achieved by using a temperature adjustable thermostatically controlled circulation pump mounted at the last fixture on the loop.

  5. Programmable thermostat - Wikipedia

    en.wikipedia.org/wiki/Programmable_thermostat

    Programming the morning temperature to be 21° C at 7:00 a.m., for instance, ensures that the temperature would then be 21 °C, whereas less sophisticated programmable thermostat would simply start working toward 21° at 7:00 a.m. Thus a PID controller sets the time at which the system should be activated in order to reach the desired ...

  6. Thermostat - Wikipedia

    en.wikipedia.org/wiki/Thermostat

    These sense the air temperature using the differential expansion of two metals to actuate an on/off switch. [14] Typically the central system would be switched on when the temperature drops below the setpoint on the thermostat, and switched off when it rises above, with a few degrees of hysteresis to prevent excessive switching.

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    The cost to repair and replace components is up; the cost to insure them is going to follow. ADAS may reduce the number of small claims In the event of a crash, the presence of ADAS features can ...

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  9. The best stair lift for 2024: Chair lifts that make ... - AOL

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    Cost: $2,095 | Type: straight stair lift | Weight limit: 350 lbs. | Warranty: 2 years parts, 5 years for motor and gearbox | Financing available: yes | Safety ...

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