Handheld Operator Terminals are portable, mobile human-machine interface devices designed for teaching, operating, and troubleshooting automated cells and robotic equipment directly at the point of action. Connected via a heavy-duty flexible umbilical cable or secure wireless connection, these lightweight mobile units give operators full mobility around machines while keeping critical control and safety functions within reach. Key hardware features typically include integrated hardwired emergency stop switches, three-position deadman safety switches, high-impact drop-resistant protective housings, high-brightness touchscreens, and physical rotary switches or keypads.