The “ED” series from Harrington Hoists is a family of single-phase electric chain hoists designed for light-to-moderate lifting tasks (as opposed to heavy-duty, three-phase industrial hoists). The “DA” variant stands for Dual Adjustable / Cylinder Control — meaning this hoist combines adjustable speed control with an ergonomic, in-line handgrip (“cylinder control”) rather than a traditional pendant. The cylinder control design allows one-handed operation. The up/down controls are built into the hook block handgrip — freeing the operator’s other hand to guide or position the load manually. This improves load control and handling, especially for awkward loads.