Which of the following is a safety feature for robotic arms?

The emergency stop button is a critical safety feature for robotic arms, as it provides a quick and effective way to halt the operation of the robotic system during an emergency or when an unsafe condition is detected. This feature ensures the safety of operators and nearby personnel by immediately disabling motion, helping to prevent potential accidents or injuries.

The design of robot systems incorporates safety mechanisms like the emergency stop to address the risks associated with automated equipment. Having a readily accessible emergency stop allows operators to respond swiftly to any unexpected situations, ensuring that the robotic arm can be stopped without delay.

In contrast, while the other options may enhance functionality or usability, they do not serve as direct safety measures in the same way. For instance, adjustable speed settings can help control the operation of the robot but do not provide a means of stopping it in an emergency. Extended arms might increase the robot's reach but could pose additional risks. Color-coded wiring aids in proper assembly and maintenance but does not impact operational safety directly.