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  2. Blackout (wartime) - Wikipedia

    en.wikipedia.org/wiki/Blackout_(wartime)

    Shut off all appliances, such as stoves, ovens, furnaces. Shut off valves for water and natural gas or propane, as well as disconnect electricity. Close blackout curtains (plain black curtains that would block light from coming in or going out).

  3. Kill switch - Wikipedia

    en.wikipedia.org/wiki/Kill_switch

    An emergency switch in Japan. On railways, [1] an emergency stop is a full application of the brakes in order to bring a train to a stop as quickly as possible. [2] This occurs either by a manual emergency stop activation, such as a button being pushed on the train to start the emergency stop, or on some trains automatically, when the train has passed a red signal or the driver has failed to ...

  4. Dead man's switch - Wikipedia

    en.wikipedia.org/wiki/Dead_man's_switch

    Interest in dead man's controls increased with the introduction of electric trams (streetcars in North America) and especially electrified rapid transit trains. The first widespread use came with the introduction of the mass-produced Birney One-Man Safety (tram) Car, though dead-man equipment was fairly rare on US streetcars until the successful PCC streetcar, which had a left-foot-operated ...

  5. Sign-on and sign-off - Wikipedia

    en.wikipedia.org/wiki/Sign-on_and_sign-off

    The sign-off sequence may include some or all of the following stages, but not necessarily in this order: An announcement informing viewers that the station is about to go off-air: it may also include a message of thanks for the viewer's patronage, along with an announcement of the time when the station is scheduled to sign on again.

  6. Fireman's switch - Wikipedia

    en.wikipedia.org/wiki/Fireman's_switch

    The Phoenix, Spilsby On the cinema façade is the Fireman's Switch, presumably to turn all the electrics off. Switch used to shut off petrol pumps at a petrol station in the event of a fire A fireman's switch is a specialized switch that allows firefighters to quickly disconnect power from high voltage devices that may pose a danger in the ...

  7. Standby power - Wikipedia

    en.wikipedia.org/wiki/Standby_power

    It only occurs because some devices claim to be "switched off" on the electronic interface but are in a different state. Switching off the plug or disconnecting it from the power point can completely solve the problem of standby power. Switching off the power point is effective enough; there is no need to disconnect all devices from the power ...

  8. Tell-tale (automotive) - Wikipedia

    en.wikipedia.org/wiki/Tell-tale_(automotive)

    A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.

  9. Earth Hour - Wikipedia

    en.wikipedia.org/wiki/Earth_Hour

    Earth Hour is a worldwide movement organized by the World Wildlife Fund (WWF). The event is held annually, encouraging the individuals, communities, and businesses to give an hour for Earth, and additionally marked by landmarks and businesses switching off non-essential electric lights, for one hour from 8:30 to 9:30 p.m., usually on the last Saturday of March, as a symbol of commitment to the ...