For sale is a Dok-Lok Safety Truck Locking System, Lock AND controller. This system does NOT include the dock plate pictured, only the lock and the controller tower with signal lights. One system per bid, two available. Both were installed at a Grainger warehouse. Top notch, OSHA complied installation. Buyer needs to hire competent help to install this system for complete safety comlpiance. Both will be professionally removed next week.