The cigarette lighter receptacle in an automobile, initially designed to power an electrically heated lighter, became a de-facto standard DC connector to supply electrical power for portable accessories used in or near an automobile.
Examples of devices that can be operated from a cigarette lighter receptacle include lights, fans, beverage heating devices, and small motorized tools such as compressors for inflating tires.
Many portable electronic devices such as music players or mobile telephones use a cigarette lighter receptacle to recharge their internal batteries or to directly operate from the vehicle electrical system.
Adapters for electronic devices may change voltage to be compatible with the supplied device. Devices that require alternating-current power at 120 volts or 240 volts can be operated with a plug-in inverter.
Application: strobe light, lightbar, warning light and so on.
LED power on red indicator
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