What is a common safety feature in material hoists to prevent accidental operation?

A key switch is a common safety feature in material hoists that prevents accidental operation by requiring a specific key to activate the hoist. This helps ensure that only authorized personnel can operate the equipment, reducing the risk of accidental or unauthorized usage, which could lead to hazardous situations.

Key switches add an additional layer of security and control, as they can also be used for locking out the hoist when it is not in use or during maintenance. This mechanism promotes safety not only for operators but also for bystanders who could be at risk if the hoist were to function without appropriate authorization.

In contrast, override controls typically allow for bypassing safety features in emergencies, which could potentially lead to unsafe conditions if used improperly. Foot pedals may be used for operation in some equipment but do not inherently prevent accidental operation. Manual operation often involves human intervention and does not provide the same level of security or restriction against unauthorized use that key switches offer.