diff --git a/inc/MicroBitBLEManager.h b/inc/MicroBitBLEManager.h
index 3a897a9..8bac02b 100644
--- a/inc/MicroBitBLEManager.h
+++ b/inc/MicroBitBLEManager.h
@@ -39,6 +39,11 @@
 #define MICROBIT_BLE_PAIR_SUCCESSFUL            0x08
 
 #define MICROBIT_BLE_PAIRING_TIMEOUT	        90
+#define MICROBIT_BLE_POWER_LEVELS               8
+#define MICROBIT_BLE_MAXIMUM_BONDS              4
+#define MICROBIT_BLE_ENABLE_BONDING 	        true
+#define MICROBIT_BLE_REQUIRE_MITM		        true
+extern const int8_t MICROBIT_BLE_POWER_LEVEL[];
 
 /**
   * Class definition for the MicroBitBLEManager.
diff --git a/source/ble-services/MicroBitBLEManager.cpp b/source/ble-services/MicroBitBLEManager.cpp
index 4ebcfa0..de75d0b 100644
--- a/source/ble-services/MicroBitBLEManager.cpp
+++ b/source/ble-services/MicroBitBLEManager.cpp
@@ -21,13 +21,7 @@
 #pragma GCC diagnostic pop
 #endif
 
-#define MICROBIT_BLE_ENABLE_BONDING 	true
-#define MICROBIT_BLE_REQUIRE_MITM		true
-
 #define MICROBIT_PAIRING_FADE_SPEED		4
-#define MICROBIT_BLE_POWER_LEVELS       8
-#define MICROBIT_BLE_MAXIMUM_BONDS      4
-
 
 const char* MICROBIT_BLE_MANUFACTURER = "The Cast of W1A";
 const char* MICROBIT_BLE_MODEL = "BBC micro:bit";