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  2. Sprinkler system timer - Wikipedia

    en.wikipedia.org/wiki/Sprinkler_system_timer

    A sprinkler system timer is an electrical device that is used to set an irrigation sprinkler system to come on automatically at a certain time. Irrigation timers first appeared in the early 1960s to control large-radius lawn sprinklers, which at the time usually contained their own electrically operated valve (most golf-course sprinklers still use this type of actuation).

  3. Irrigation controller - Wikipedia

    en.wikipedia.org/wiki/Irrigation_controller

    An irrigation controller is a device to operate automatic irrigation systems such as lawn sprinklers and drip irrigation systems. Most controllers have a means of setting the frequency of irrigation, the start time, and the duration of watering.

  4. Active fire protection - Wikipedia

    en.wikipedia.org/wiki/Active_fire_protection

    A typical automatic sprinkler system operates when heat at the site of a fire causes a fusible link or glass component in the sprinkler head to fail, thereby releasing the water from the sprinkler head. [5] This means that only the sprinkler heads at the fire location actuate – not all the sprinklers on a floor or in a building.

  5. Fire alarm system - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_system

    "M" manual systems (no automatic fire detectors, so the building is fitted with call points and sounders). "L" automatic systems intended for the protection of life. "P" automatic systems intended for the protection of property. Categories for automatic systems are further subdivided into L1 to L5 and P1 to P2.

  6. When can I water my lawn in Sacramento? City schedule is ...

    www.aol.com/water-lawn-sacramento-city-schedule...

    On those days automatic sprinklers can be used for irrigation before 10 a.m. or after 7 p.m. The watering schedule for homes and businesses within Sacramento city limits is based on each property ...

  7. Nashville residents asked to reduce sprinkler usage as water ...

    www.aol.com/nashville-residents-asked-reduce...

    To continue providing water for residential, irrigation and fire protection use, the department is asking Nashville residents with odd numbered addresses to use automated sprinkler systems on ...

  8. Fusible link - Wikipedia

    en.wikipedia.org/wiki/Fusible_link

    Mechanical fusible links are utilized as the triggering device in fire sprinkler systems and mechanical automatic door release mechanisms that close fire doors in warehouses, etc. Fire dampers in ventilation systems have fusible links so that the dampers close automatically in case of fire, limiting the spread of flame or hot gases through a ...

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