diff --git a/src/load/load.h b/src/load/load.h
index 0b6d1d6..b837758 100644
--- a/src/load/load.h
+++ b/src/load/load.h
@@ -31,6 +31,10 @@
 /**
  * @brief The upper Hystersis value.
  * This is the upper bound of the digital/boolean hysteresis curve.
+ *
+ * If the input is below low it always sets the output high.
+ * If the input is between high and low with the output high it stays high.
+ * If the input is above high and the ouput is high it's set low.
  */
 #ifndef HYSTERESIS_HI
 #define HYSTERESIS_HI 900
@@ -39,6 +43,10 @@
 /**
  * @brief The lower Hystersis value.
  * This is the upper bound of the digital/boolean hysteresis curve.
+ *
+ * If the input is below low it always sets the output high.
+ * If the input is between high and low with the output high it stays high.
+ * If the input is above high and the ouput is high it's set low.
  */
 #ifndef HYSTERESIS_LO
 #define HYSTERESIS_LO 700