diff --git a/src/device_library.h b/src/device_library.h
index 62b82a9cd..d8e80475f 100644
--- a/src/device_library.h
+++ b/src/device_library.h
@@ -180,6 +180,7 @@
 { 74, DeviceType::ALERT, "EM10", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 
 // Gateways - 0x48
+{17, DeviceType::GATEWAY, "MX400", DeviceFlags::EMS_DEVICE_FLAG_NONE}, // 0x48 and 0x4B
 {189, DeviceType::GATEWAY, "KM200, MB LAN 2", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 {252, DeviceType::GATEWAY, "K30RF, MX300", DeviceFlags::EMS_DEVICE_FLAG_NONE},