Dimmer for LED lamps

Dimer touch for Ledlon lamps black, one touch for turning on and another for turning off, touch and hanging to increase lighting gradually until the lighting reaches the highest level, touch and hang again to decrease the lighting gradually until reaching the lowest level, suitable up to 4 amperes, simple wiring method: positive wire and negative wire from the battery, as well as two wires for the lamp, the negative of the lamp cannot be connected to the body and must be connected to the negative outside the dimmer.