Description from Manufacturer 

POLY CHOCK PREMIUM wedges for wheels, incorporates different signalling and control elements to inform the driver in the truck and the operator inside the industrial unit whether they can proceed with their task. The detection barrier in the wheel makes that, when the chock is positioned in its place, the outside light turns red, indicating to the driver that he can´t move the vehicle. Meanwhile, inside is green and so the operator can proceed to load or unload the goods. To make the task easier, they include also an operation panel for connecting with the existing doors and ramps. 

STC Industrial Services only sells good quality items, this item is brand new, never used or installed.

If you order before 3:00 pm ET is possible your order ships same day.

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