diff --git a/protocol/esta/analog/receiver.h b/protocol/esta/analog/receiver.h
index ce1b1fd..3beeb24 100644
--- a/protocol/esta/analog/receiver.h
+++ b/protocol/esta/analog/receiver.h
@@ -56,6 +56,20 @@ struct Receiver
     else
       return (mV - zero) / (full - zero);
   }
+
+  /**
+   * @brief Determine the state of a non-dim switch.
+   * @param mV
+   * @param cur If incorporating hysteresis, the current state of the switch.
+   * @return
+   */
+  bool state(const int16_t mV, const bool cur = false) const
+  {
+    uint8_t l = level(mV);
+    if (cur)
+      return !(l < 102);  // ~40%
+    return l > 153;       // ~60%
+  }
 };
 
 } // namespace ANALOG