Height adjustable piece of furniture with zero stand-by power consumption

The present invention relates to a height adjustable piece of furniture comprising at least one extendable column, an electric motor adapted for driving the extendable column, at least one switch (13a, 13b, R1, R2) for operation control of the electric motor (30), and a power control unit adapted to control the power distribution to the height adjustable piece of furniture, and wherein the power control unit is connected to a power source (16). The connection between the power source and the height adjustable piece of furniture is provided via the switch, and the switch is in an activated state adapted to connect the power source to the height adjustable piece of furniture, and in a deactivated state adapted to disconnect the power source from the height adjustable piece of furniture. The present invention further relates to a power control unit for control of power distribution to a height adjustable piece of furniture.