diff --git a/lib/Hoymiles/src/parser/DevInfoParser.cpp b/lib/Hoymiles/src/parser/DevInfoParser.cpp
index 513e6b6d6..b2b30a2e8 100644
--- a/lib/Hoymiles/src/parser/DevInfoParser.cpp
+++ b/lib/Hoymiles/src/parser/DevInfoParser.cpp
@@ -28,6 +28,7 @@ const devInfo_t devInfo[] = {
     { { 0x10, 0x12, 0x30, ALL }, 1500, "HM-1500-4T" },
     { { 0x10, 0x10, 0x10, 0x15 }, static_cast<uint16_t>(300 * 0.7), "HM-300-1T" }, // HM-300 factory limitted to 70%
 
+    { { 0x10, 0x20, 0x11, ALL }, 300, "HMS-300-1T" }, // 00
     { { 0x10, 0x20, 0x21, ALL }, 350, "HMS-350-1T" }, // 00
     { { 0x10, 0x20, 0x41, ALL }, 400, "HMS-400-1T" }, // 00
     { { 0x10, 0x10, 0x51, ALL }, 450, "HMS-450-1T" }, // 01