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British electric clock connector, three-pin, made by MK. Showing the rear of the plug with its 2 A fuse. Fused plugs and sockets of various proprietary and non-interchangeable types are found in older public buildings in the UK, where they are used to feed AC electric wall clocks.
Example of a Europlug. The Europlug is a flat, non-rewirable two-pole, round-pin domestic AC power plug, rated for voltages up to 250 V and currents up to 2.5 A. [1] It is a compromise design intended to connect low-power Class II appliances safely to the many different forms of round-pin domestic power socket used across Europe.
The inner surface of the male plug shroud is flattened at the 6-o'clock position. One or two grooves are cut in the male plug shroud to mate with corresponding keys in the female socket. There is a required major groove at the 6-o'clock position and an optional minor groove at the 12-o'clock position.
An electric clock is a clock that is powered by electricity, as opposed to a mechanical clock which is powered by a hanging weight or a mainspring. The term is often applied to the electrically powered mechanical clocks that were used before quartz clocks were introduced in the 1980s.
Another requirement is to provide low-voltage electricity to a device from mains electricity; this would be done by what is usually called a power supply.Most modern electronic devices require between 1.5 and 24 volts DC; lower-powered devices at these voltages can often work either from batteries or mains.
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In the early 2000s, Gent released the Vigilon Compact, a similar concept to System 32000. Again limited to 2 loops, the system was designed as a cheaper alternative for smaller sites. The Vigilon Compact does not feature a full QWERTY keyboard and requires a different form factor of loop card. The Vigilon Compact shares the same devices as Vigilon.