The switches used in Logitech Silent Mice are made of a rubber actuator that dampens both the vibration and the sound. A red plastic cap covers the rubber actuator to improve the switch's tactile feedback and lengthen its lifespan.
Headphones
In early powered radios, the headphone was part of the vacuum tube's plate circuit and carried dangerous voltages. It was normally connected directly to the positive high voltage battery terminal, and the other battery terminal was securely grounded.
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Logitech 2.4 GHz Digital Cordless for Business features frequency agility. With this technology, the Logitech mouse or keyboard that encounters any interference from another cordless device will automatically identify and switch to a more “quiet” location in the band to transmit data.
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