update readme.md #1
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@ -127,6 +127,8 @@ Connection scheme for a typical dual-zone heating system with two heaters and tw
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| 7 | Grelec 2 | Heater 2 – Neutral / Return | – |
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| 8/PE | Termočlen 2- | Thermocouple 2 – Negative | White / Red |
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**Notes:**
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- Pins 1 & 5 → Heater 1 (usually 230 V AC or 24 V, depending on system)
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