Here is a log of events when I disconnected a thermostat:
dev:462022-12-06 17:57:44.359debugparse: domain: climate, device_class: null, entity: climate.cuisine, newVals: [unavailable], friendly: Cuisine
dev:462022-12-06 17:57:44.347debugparse(): description = {"id":1,"type":"event","event":{"event_type":"state_changed","data":{"entity_id":"climate.cuisine","old_state":{"entity_id":"climate.cuisine","state":"heat","attributes":{"hvac_modes":["heat","off"],"min_temp":5,"max_temp":30,"current_temperature":23.0,"temperature":23.0,"icon":"mdi:radiator","friendly_name":"Cuisine","supported_features":1},"last_changed":"2022-12-06T22:57:20.754390+00:00","last_updated":"2022-12-06T22:57:20.754390+00:00","context":{"id":"01GKMTGVVJF5NEPNH8VGY602CB","parent_id":null,"user_id":null}},"new_state":{"entity_id":"climate.cuisine","state":"unavailable","attributes":{"hvac_modes":["heat","off"],"min_temp":5,"max_temp":30,"icon":"mdi:radiator","friendly_name":"Cuisine","supported_features":1},"last_changed":"2022-12-06T22:57:43.185031+00:00","last_updated":"2022-12-06T22:57:43.185031+00:00","context":{"id":"01GKMTHHRH4S4VTA9RSXVPBP27","parent_id":null,"user_id":null}}},"origin":"LOCAL","time_fired":"2022-12-06T22:57:43.185031+00:00","context":{"id":"01GKMTHHRH4S4VTA9RSXVPBP27","parent_id":null,"user_id":null}}}
dev:462022-12-06 17:57:44.333debugparse: domain: sensor, device_class: power, entity: sensor.cuisine_power, newVals: [unavailable], friendly: Cuisine Power
dev:462022-12-06 17:57:44.320debugparse(): description = {"id":1,"type":"event","event":{"event_type":"state_changed","data":{"entity_id":"sensor.cuisine_power","old_state":{"entity_id":"sensor.cuisine_power","state":"1624","attributes":{"state_class":"measurement","unit_of_measurement":"W","device_class":"power","icon":"mdi:power-plug","friendly_name":"Cuisine Power"},"last_changed":"2022-12-06T22:57:20.754154+00:00","last_updated":"2022-12-06T22:57:20.754154+00:00","context":{"id":"01GKMTGVVJG9CVKAJCMQFB9F5E","parent_id":null,"user_id":null}},"new_state":{"entity_id":"sensor.cuisine_power","state":"unavailable","attributes":{"state_class":"measurement","unit_of_measurement":"W","device_class":"power","icon":"mdi:lan-disconnect","friendly_name":"Cuisine Power"},"last_changed":"2022-12-06T22:57:43.184751+00:00","last_updated":"2022-12-06T22:57:43.184751+00:00","context":{"id":"01GKMTHHRGJD1XM3HY9QY60G99","parent_id":null,"user_id":null}}},"origin":"LOCAL","time_fired":"2022-12-06T22:57:43.184751+00:00","context":{"id":"01GKMTHHRGJD1XM3HY9QY60G99","parent_id":null,"user_id":null}}}
dev:462022-12-06 17:57:44.301debugparse(): description = {"id":1,"type":"event","event":{"event_type":"state_changed","data":{"entity_id":"sensor.cuisine_temperature","old_state":{"entity_id":"sensor.cuisine_temperature","state":"23.0","attributes":{"state_class":"measurement","unit_of_measurement":"°C","device_class":"temperature","icon":"mdi:thermometer-high","friendly_name":"Cuisine Temperature"},"last_changed":"2022-12-06T22:57:20.753906+00:00","last_updated":"2022-12-06T22:57:20.753906+00:00","context":{"id":"01GKMTGVVHSMZTXX005HXFWTG5","parent_id":null,"user_id":null}},"new_state":{"entity_id":"sensor.cuisine_temperature","state":"unavailable","attributes":{"state_class":"measurement","unit_of_measurement":"°C","device_class":"temperature","icon":"mdi:thermometer-off","friendly_name":"Cuisine Temperature"},"last_changed":"2022-12-06T22:57:43.184460+00:00","last_updated":"2022-12-06T22:57:43.184460+00:00","context":{"id":"01GKMTHHRGW4WMTZTK8DEFM006","parent_id":null,"user_id":null}}},"origin":"LOCAL","time_fired":"2022-12-06T22:57:43.184460+00:00","context":{"id":"01GKMTHHRGW4WMTZTK8DEFM006","parent_id":null,"user_id":null}}}
dev:462022-12-06 17:57:21.920debugparse(): description = {"id":1,"type":"event","event":{"event_type":"state_changed","data":{"entity_id":"climate.cuisine","old_state":{"entity_id":"climate.cuisine","state":"unavailable","attributes":{"hvac_modes":["heat","off"],"min_temp":5,"max_temp":30,"icon":"mdi:radiator","friendly_name":"Cuisine","supported_features":1},"last_changed":"2022-12-06T22:56:41.718534+00:00","last_updated":"2022-12-06T22:56:41.718534+00:00","context":{"id":"01GKMTFNQPPVPAM8QD2F2RFVV1","parent_id":null,"user_id":null}},"new_state":{"entity_id":"climate.cuisine","state":"heat","attributes":{"hvac_modes":["heat","off"],"min_temp":5,"max_temp":30,"current_temperature":23.0,"temperature":23.0,"icon":"mdi:radiator","friendly_name":"Cuisine","supported_features":1},"last_changed":"2022-12-06T22:57:20.754390+00:00","last_updated":"2022-12-06T22:57:20.754390+00:00","context":{"id":"01GKMTGVVJF5NEPNH8VGY602CB","parent_id":null,"user_id":null}}},"origin":"LOCAL","time_fired":"2022-12-06T22:57:20.754390+00:00","context":{"id":"01GKMTGVVJF5NEPNH8VGY602CB","parent_id":null,"user_id":null}}}
dev:462022-12-06 17:57:21.894debugparse(): description = {"id":1,"type":"event","event":{"event_type":"state_changed","data":{"entity_id":"sensor.cuisine_power","old_state":{"entity_id":"sensor.cuisine_power","state":"unavailable","attributes":{"state_class":"measurement","unit_of_measurement":"W","device_class":"power","icon":"mdi:lan-disconnect","friendly_name":"Cuisine Power"},"last_changed":"2022-12-06T22:56:41.718281+00:00","last_updated":"2022-12-06T22:56:41.718281+00:00","context":{"id":"01GKMTFNQPNSTEC7EH6D654HMJ","parent_id":null,"user_id":null}},"new_state":{"entity_id":"sensor.cuisine_power","state":"1624","attributes":{"state_class":"measurement","unit_of_measurement":"W","device_class":"power","icon":"mdi:power-plug","friendly_name":"Cuisine Power"},"last_changed":"2022-12-06T22:57:20.754154+00:00","last_updated":"2022-12-06T22:57:20.754154+00:00","context":{"id":"01GKMTGVVJG9CVKAJCMQFB9F5E","parent_id":null,"user_id":null}}},"origin":"LOCAL","time_fired":"2022-12-06T22:57:20.754154+00:00","context":{"id":"01GKMTGVVJG9CVKAJCMQFB9F5E","parent_id":null,"user_id":null}}}
dev:462022-12-06 17:57:21.874debugparse(): description = {"id":1,"type":"event","event":{"event_type":"state_changed","data":{"entity_id":"sensor.cuisine_temperature","old_state":{"entity_id":"sensor.cuisine_temperature","state":"unavailable","attributes":{"state_class":"measurement","unit_of_measurement":"°C","device_class":"temperature","icon":"mdi:thermometer-off","friendly_name":"Cuisine Temperature"},"last_changed":"2022-12-06T22:56:41.718025+00:00","last_updated":"2022-12-06T22:56:41.718025+00:00","context":{"id":"01GKMTFNQPEKN39AEB5R0ZAGTB","parent_id":null,"user_id":null}},"new_state":{"entity_id":"sensor.cuisine_temperature","state":"23.0","attributes":{"state_class":"measurement","unit_of_measurement":"°C","device_class":"temperature","icon":"mdi:thermometer-high","friendly_name":"Cuisine Temperature"},"last_changed":"2022-12-06T22:57:20.753906+00:00","last_updated":"2022-12-06T22:57:20.753906+00:00","context":{"id":"01GKMTGVVHSMZTXX005HXFWTG5","parent_id":null,"user_id":null}}},"origin":"LOCAL","time_fired":"2022-12-06T22:57:20.753906+00:00","context":{"id":"01GKMTGVVHSMZTXX005HXFWTG5","parent_id":null,"user_id":null}}}