This is the Sharp GP2D12 IR detector with 3 wires that plug into the detector. For wiring the detector follow this link.
1/4" Hex Size, 2" Length, 4-40 Thread Size
The HD2 tracked platform is a large, heavy duty tracked robot with the power to pull a truck and climb stairs. A wealth of internal space allows for batteries, controls and an optional computer. Customized version of item TP-200-001.