diff --git a/inc/states.h b/inc/states.h
--- a/inc/states.h
+++ b/inc/states.h
@@ -27,6 +27,7 @@ typedef union
         int32_t setpoint_brew;
         int32_t setpoint_steam;
         uint32_t control_mode;
+        uint32_t sensor_type;
         uint32_t plant_type;
         uint32_t hysteresis;
     } val;
@@ -41,7 +42,8 @@ enum tempunits {
 
 enum state {
     STATE_IDLE = 0,
-    
+
+	STATE_SETSENSORTYPE,
     STATE_SETMODE,
     STATE_SETPLANTTYPE,
     STATE_SETHYSTERESIS,
@@ -89,4 +91,14 @@ enum RESET_MODE {
 	RESET_SIZE,
 };
 
+enum SENSOR_TYPE {
+	SENSOR_NTC = 0,
+	SENSOR_TC_K,
+	SENSOR_TC_E,
+	SENSOR_TC_N,
+	SENSOR_TC_R,
+	SENSOR_TC_S,
+	SENSOR_TC_T,
+};
+
 #endif