v1.6.18 — ET coefficient per zone

What's new

ET coefficient (ETcoef) per zone

• **Zone switch attribute ** — always available on every zone run switch; reads ETcoef from device every 5 min via slow coordinator
• **** — optional config entity (disabled by default); reads current value from device every 5 min; stores a pending value when changed in HA without writing to device immediately
• **** — optional config entity (disabled by default); press to write the pending ETcoef to the device, clear the pending value, and trigger an immediate slow coordinator refresh

Range: 0.01–2.0, step 0.01. 4 zones × 2 new entities = 8 new entities total (both disabled by default).

API: POST /api/4/zone/{uid}/properties {"ETcoef": value}