ESPHome’s 2026.11 upgrade guidance asks owners of Beken smart plugs using an HLW8012-family power meter with inverted pins to calibrate their readings again. Older firmware counted some short pulses twice; the correction counts each once, so calibration tuned to the old behavior can make the new readings half as large.
The warning covers HLW8012, BL0937 and CSE7759 meters. Short pulses on non-inverted pins were previously missed and are now counted. Ordinary pulse counters using the default filter, and slower pulses such as those from water or gas meters, retain their previous counting behavior.