diff --git a/src/ems_devices.h b/src/ems_devices.h
index 5a52eb7ba..3dc105356 100644
--- a/src/ems_devices.h
+++ b/src/ems_devices.h
@@ -198,7 +198,8 @@ const _EMS_Device_Types EMS_Devices_Types[] = {
 #define EMS_OFFSET_MMPLUSStatusMessage_valve_status 2 // valve in percent
 
 // MM10
-#define EMS_TYPE_MMStatusMessage 0xAB             // mixer status
+#define EMS_TYPE_MMStatusMessage_HC1 0xAB         // mixer status HC1
+#define EMS_TYPE_MMStatusMessage_HC2 0xAC         // mixer status HC2
 #define EMS_OFFSET_MMStatusMessage_flow_set 0     // flow setpoint
 #define EMS_OFFSET_MMStatusMessage_flow_temp 1    // flow temperature
 #define EMS_OFFSET_MMStatusMessage_pump_mod 3     // pump modulation in percent