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Term - U

Uniterrupted Power Supply :

Equipment that supplies power in the case of power failure, i.e. batteries or generator.

UL :

The UL label on a product signifies that the product has met the Underwriters Laboratories requirements and that the product manufacturer is authorized to use the UL symbol on their products.

Upload :

Sending information from a peripheral device to the host computer in an access control system.

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