Hi,
I configured my Stelpro thermostats using zigbee2mttq.
Here is the model: Stelpro SMT402 control via MQTT | Zigbee2MQTT
I see the attributes documented in this url but I also see another attribute pi_heating_demand in the mqtt logs that I would like to use to calculate the current power of the thermostat. Max is 4000w and pi_heating_demand is a percentage of max power so it would be easy to calculate. Here is an example of log.
[2025-10-27 21:22:59] e[32minfoe[39m: z2m:mqtt: MQTT publish: topic ‘zigbee2mqtt/thermostat_sdb’, payload ‘{“humidity”:50,“keypad_lockout”:“unlock”,“linkquality”:255,“local_temperature”:21,“occupied_heating_setpoint”:19,“pi_heating_demand”:0,“running_state”:“idle”,“system_mode”:“heat”}’
I tried many solutions using AI but none of them were successful. I tried an external converter in js, a yaml sensor with a template. I never succeded to add this value inside the device. My goal is to include it in the energy tracking dashboard.
Thank you for your help.