diff --git a/ReadMe.MD b/ReadMe.MD
index 88c24a2..d7bef49 100644
--- a/ReadMe.MD
+++ b/ReadMe.MD
@@ -51,6 +51,22 @@ public enum DeviceType : byte
     DOOR = 30,
 }
 ```
+public enum DeviceAlias : byte
+{
+    B1 = 20 + 1, //BUFFER1 ~ 5
+    B2 = 20 + 2,
+    B3 = 20 + 3,
+    B4 = 20 + 4,
+    B5 = 20 + 5,
+    C1 = 40 + 1, //충전소 1
+    C2 = 40 + 2, //충전소 2
+    C3 = 40 + 3, //충전소 3
+    C4 = 40 + 4, //충전소 4
+    E1 = 90 + 1, //장비1 (SSOTRON Loader)
+    E2 = 90 + 2, //장비2 (TOPS ENIG)
+    E3 = 90 + 3, //장비3 (SSOTRON DIVERTER)
+}
+
 ### 기본 패킷 구조
 ```
 [STX][LEN][ID][CMD][DATA][CRC16][ETX]