![]() ![]() Turn a dial, and the switch will activate, typically for anywhere from 5 minutes to an hour. Similarly, mechanical bathroom timers have been around for a long time. As the dial turned, the pins would flip the switch on and off. Typically, they worked by inserting sets of pins into a rotating dial. They were particularly popular with frequent travelers, since they could be used to turn a few lamps on and off while you were away. ![]() These were timers that could be plugged into a power outlet, and used to power various devices.
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