Household appliance, household appliance arrangement and cooking system

Household appliance arrangement comprising:

• a household appliance comprising an antenna, a receiver, a controller and a first indicator;
• and
• a wireless sensor configured to transmit a sensor signal indicative of a sensed condition and having a second indicator adapted to indicate a condition of a wireless communication line between said sensor and said antenna;
• and
• the antenna configured to receive said sensor signal from said wireless sensor via said wireless communication line in the ISM band, said antenna comprising a shape part and a slit, the shape part resembling a heart shape and comprising a trapezoidal-shape section and first and second elliptical-shape sections, the first and second elliptical-shape sections separated by said slit, and a tongue extending in said slit from said trapezoidal-shape section;
• said receiver comprising an amplifier adapted to generate signal strength information comprising an amplification factor for said sensor signal, and
• said controller adapted to process said signal strength information and to generate an indication signal, wherein said first indicator is adapted to indicate said signal strength information based on said indication signal.