[Feature]3 wire single acting hydraulic power unit 12V DC, small area, use widely, easy to carry. [Wide Use]Fits most single-acting hydraulic pumps power units. [Reasonable Design]2-button pendant control is most commonly used as a dump trailer remote, which is built of a high-impact, highly visible plastic with a standard 15inch cord. Powered by 12 volts DC, well constructed. High quality ABS material protective shell for long-term use. [Wire Connection]For 3 wires (single-acting) dump trailer control:Use wire with head connect to lower valve. Use wire with circle connect to battery positive and .3 Wires-Red (power),Black(down),Blue(start). Colour:As Shown Material:plastic+Metal Package Contents: 1 * 3 Wire Dump Trailer Remote Control Switch Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.