Which of the following stacker labels indicates an electric type?

The indication that a stacker is of electric type is represented by the label 'FB.' This labeling convention is commonly used in the industry to categorize forklifts and stackers based on their power source or design features. In this case, 'FB' signifies that the stacker is electrically powered, distinguishing it from others that may use different power sources.

Understanding these labels is crucial in identifying equipment types quickly, which impacts safety protocols and operational efficiency in a warehouse or material handling environment. Recognizing an electric stacker helps operators anticipate its operational characteristics, such as lower noise levels and the absence of exhaust emissions, enhancing work conditions. This knowledge is essential for selecting the appropriate equipment for specific tasks based on their power type and suitability for the environment in which they will be used.