Wireless switch with function of electrical quantity metering and acquisition method

The invention relates to a wireless switch with the function of electrical quantity metering. The wireless switch comprises a power supply unit, a sampling unit, a main control unit and an on-off control unit, wherein after the power supply unit inputs an alternating current, the power supply unit outputs working voltages of the sampling unit, the main control unit and the on-off control unit. The invention further provides an acquisition method for the electric current, the power and the electrical quantity of the wireless switch with the function of the electrical quantity metering. For the form, the wireless switch with the electrical quantity metering function can directly replace an ordinary wall switch in the market, and for the function, the technology of the wireless switch not only can achieve the function of the ordinary switch, but also can count the electrical quantity consumed by each independent load loop, and a measuring result can be sent to a far-end energy management platform positioned without wiring.