A control box for programming the motions of a robot. Also called a "teach box," the robot is set to "learning" or "teach" mode, and the pendant is used to control the robot step by step. Teach pendants are typically handheld devices and may be wired or wireless.
A Teach Pendant
This Comau teach pendant is used to program various models of the robotic industrial machinery the company makes. (Image courtesy of Comau S.p.A., www.comau.com)