Connect to a hand-operated generator or solar cell to perform your work. Consists of a 10cm x 9.5cm x 6.3cm L-shaped wooden block with a motor, metal pulley, precision gear box and positive and negative input terminals. To convert manual energy to electrical energy, connect our Genecon Hand Electric Generator. Hang a weight (4kg maximum) by a string to the winch pulley, then turn the generator handle to hoist the load. To convert light energy to electrical energy, connect a solar cell. The solar cell can hoist loads of 500g or more. Includes clamp for mounting to a table or bench. Requires any weights, a hand-held generator or Solar Cell, sold separately.