FIELD: controlled heating of electric and other types of tea-pots. SUBSTANCE: guarding device has boiling sensor formed as separate unit, which may be attached in any required position relative to tea-pot. When gas apparatus is used as heater, gas supply is cut off by means of electromechanical drive for turning gas supplying valve through 90 deg. Guarding device has relay unit with electronic switch providing required switchings and processing of signals delivered by boiling sensor. Thus, beginning of water boiling is controlled by appearance of steam exiting from tea-pot nose. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 3 cl, 9 dwg
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