A wireless communication device for avoiding an influence of an electric oven operating with a commercial power supply, the wireless communication device comprising: a transmission data generator for generating a transmission data; a modulator for generating modulated signal according to the transmission signal, the transmission comprising a plurality of slots generated by the transmission data generator while transmission data in the respective slots is the same; a high frequency processor for converting the modulated signal to a high frequency signal and for converting a received high frequency signal to a modulated signal; demodulator for demodulating the received modulated signal; a data analyzer for analyzing the modulated signal; a controller for controlling the modulator, the demodulator and the data analyzer; and an antenna for transmitting and receiving the high frequency signal, characterized in that: the transmission data generator is configured to generate a plurality of slots, each of the plurality of slots including a predetermined number of subslots, after dividing the transmission data into the plurality of subslots; a time length T1 of each of the plurality of subslots is equal to or smaller than an oscillator stopping time of a magnetron of the electric oven, the time length T1 being determined on the basis of a change in voltage of the commercial AC power supply; an arrangement of the subslots included in respective one of the plurality of slots is configured to differ between the plurality of slots; and the time length T2 of each of the plurality of slots is T2 =T0 /2, where T0 is a period of the commercial AC power supply. a transmission data generator for generating a transmission data; a modulator for generating modulated signal according to the transmission signal, the transmission comprising a plurality of slots generated by the transmission data generator while transmission data in the respective slots is the same; a high frequency processor for converting the modulated signal to a high frequency signal and for converting a received high frequency signal to a modulated signal; demodulator for demodulating the received modulated signal; a data analyzer for analyzing the modulated signal; a controller for controlling the modulator, the demodulator and the data analyzer; and an antenna for transmitting and receiving the high frequency signal, characterized in that: the transmission data generator is configured to generate a plurality of slots, each of the plurality of slots including a predetermined number of subslots, after dividing the transmission data into the plurality of subslots; a time length T1 of each of the plurality of subslots is equal to or smaller than an oscillator stopping time of a magnetron of the electric oven, the time length T1 being determined on the basis of a change in voltage of the commercial AC power supply; an arrangement of the subslots included in respective one of the plurality of slots is configured to differ between the plurality of slots; and the time length T2 of each of the plurality of slots is T2 =T0 /2, where T0 is a period of the commercial AC power supply. the transmission data generator is configured to generate a plurality of slots, each of the plurality of slots including a predetermined number of subslots, after dividing the transmission data into the plurality of subslots; a time length T1 of each of the plurality of subslots is equal to or smaller than an oscillator stopping time of a magnetron of the electric oven, the time length T1 being determined on the basis of a change in voltage of the commercial AC power supply; an arrangement of the subslots included in respective one of the plurality of slots is configured to differ between the plurality of slots; and the time length T2 of each of the plurality of slots is T2 =T0 /2, where T0 is a period of the commercial AC power supply.