diff --git a/sonoff/sonoff.h b/sonoff/sonoff.h
index 7c68b7d38..357409813 100644
--- a/sonoff/sonoff.h
+++ b/sonoff/sonoff.h
@@ -147,7 +147,12 @@ typedef unsigned long power_t;              // Power (Relay) type
 #define KNX_ENERGY_DAILY       23
 #define KNX_ENERGY_START       24
 #define KNX_ENERGY_TOTAL       25
-#define KNX_MAX_device_param   25
+#define KNX_SLOT1              26
+#define KNX_SLOT2              27
+#define KNX_SLOT3              28
+#define KNX_SLOT4              29
+#define KNX_SLOT5              30
+#define KNX_MAX_device_param   30
 
 /*********************************************************************************************\
  * Enumeration
@@ -202,4 +207,4 @@ const char kCommandSource[] PROGMEM = "I|MQTT|Restart|Button|Switch|Backlog|Seri
 
 extern uint8_t light_device;  // Light device number
 
-#endif  // _SONOFF_H_
\ No newline at end of file
+#endif  // _SONOFF_H_