diff --git a/src/veles/devices/generic.py b/src/veles/devices/generic.py
index 34f7cfc..83ae9d3 100644
--- a/src/veles/devices/generic.py
+++ b/src/veles/devices/generic.py
@@ -151,3 +151,12 @@ class ModbusRTUDevice(Device):
         in child classes.
         """
         return int(self.read_register(self.input_registers["SERIAL_NUMBER_1"]))
+
+    @property
+    def serial_number(self) -> int:
+        """
+        Return serial number
+        """
+        serial_number_1 = self.device_code
+        serial_number_2 = int(self.read_register(self.input_registers["SERIAL_NUMBER_2"]))
+        return (serial_number_1 << 16) + serial_number_2