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+# Class overview
+
+| Class         | Models                      | Serial range |
+| --------------| --------------------------- | ------------ |
+| HM_1CH        | HM-300/350/400-1T           | 1121         |
+| HM_2CH        | HM-600/700/800-2T           | 1141         |
+| HM_4CH        | HM-1000/1200/1500-4T        | 1161         |
+| HMS_1CH       | HMS-300/350/400/450/500-1T  | 1124         |
+| HMS_1CHv2     | HMS-500-1T v2               | 1125         |
+| HMS_2CH       | HMS-600/700/800/900/1000-2T | 1144         |
+| HMS_4CH       | HMS-1600/1800/2000          | 1164         |
+| HMT_6CH       | HMT-1800/2250-6T            | 1382         |