Patent ID: 9024775
Filing Date: 2015-05-05
Classification: H01H

Abstract:
1. A control panel for a measuring device including a housing and at least one control and inspection window, the control panel comprising: at least one finger-operable optical key comprising a transmitting element and a receiving element, and the at least one optical key is constructed to be operable through the at least one control and inspection window using a control finger; at least one finger-operable mechanical key corresponding in function to the at least one finger-operable optical key; and at least one evaluation unit that is configured to detect operation of said at least one finger-operable optical key and said at least one finger-operable mechanical key, said at least one evaluation unit being operable for deactivating said at least one finger-operable optical key as soon as said at least one finger-operable mechanical key is operated, and said at least one evaluation unit being operable for deactivating said at least one finger-operable optical key by acting on at least one of said transmitting element and said receiving element of said at least one finger-operable optical key.