Wikipedia description of a Faraday Cup
OUAL Faraday Cup Control Panel Photograph
Placing the LE cup in the “out” position will sound an audible and visual warning throughout the facility.
When the HIGH RAD MODE key switch is in the “ON” position there will be a 15 second delay between pushing the LE cup “out” button and:
The cup lifting out of the beam path
The green “out” light on the button illuminating