Smoking device with consumable temperature sensing member

An aerosol-generating device (100) for generating an aerosol from an aerosol-generating article (200) is provided. The aerosol-generating device comprises a cavity (10) for receiving an aerosol-generating article (200); a heater assembly for heating the aerosol-generating article received in the cavity; and a power source (142). A power source (142) is configured to supply power to the heater assembly and is controlled by the controller (140) to be operable in at least a low power mode in which no aerosol is generated and a high power mode in which aerosol can be generated. The controller (140) is configured to control the power source to initially operate in a low power mode. In the low power mode, the controller (140) is configured to measure a parameter related to a rate of temperature change of the heater assembly or a rate of temperature change of the aerosol-generating article received in the cavity. The controller (140) is configured to switch from the low power mode to the high power mode only when th