diff --git a/schemas/exposes_record.json b/schemas/exposes_record.json
index 2c2f569..06531dd 100644
--- a/schemas/exposes_record.json
+++ b/schemas/exposes_record.json
@@ -161,6 +161,9 @@
                 },
                 {
                     "$ref": "usb_port.json#/$defs/USBPort"
+                },
+                {
+                    "$ref": "modbus.json#/$defs/ModbusRTUDetect"
                 }
             ]
         },
diff --git a/schemas/meson.build b/schemas/meson.build
index e68d526..fb8821b 100644
--- a/schemas/meson.build
+++ b/schemas/meson.build
@@ -11,6 +11,7 @@
     'leak_detector.json',
     'legacy.json',
     'mctp.json',
+    'modbus.json',
     'nvidia.json',
     'openbmc-dbus.json',
     'pid.json',
diff --git a/schemas/modbus.json b/schemas/modbus.json
new file mode 100644
index 0000000..7c358ab
--- /dev/null
+++ b/schemas/modbus.json
@@ -0,0 +1,89 @@
+{
+    "$schema1": "http://json-schema.org/draft-07/schema#",
+    "$defs": {
+        "ModbusRTUDetect": {
+            "additionalProperties": false,
+            "description": "The definition for the modbus device.",
+            "type": "object",
+            "properties": {
+                "Type": {
+                    "description": "The type of configuration object.",
+                    "const": "ModbusRTUDetect"
+                },
+                "Name": {
+                    "description": "The name of the modbus device.",
+                    "type": "string"
+                },
+                "Address": {
+                    "description": "The address ranges for the modbus device.",
+                    "type": "array",
+                    "items": {
+                        "type": "object",
+                        "additionalProperties": false,
+                        "properties": {
+                            "RangeStart": {
+                                "description": "The start address for the address range of the modbus device.",
+                                "type": "number"
+                            },
+                            "RangeEnd": {
+                                "description": "The end address for the address range of the modbus device.",
+                                "type": "number"
+                            },
+                            "SerialPort": {
+                                "description": "The name of the serial port from SerialPort definition.",
+                                "type": "string"
+                            }
+                        },
+                        "required": ["RangeStart", "RangeEnd", "SerialPort"]
+                    }
+                },
+                "Registers": {
+                    "description": "The Modbus register definition.",
+                    "type": "array",
+                    "items": {
+                        "type": "object",
+                        "additionalProperties": false,
+                        "properties": {
+                            "Name": {
+                                "description": "The name of the register.",
+                                "enum": [
+                                    "PartNumber",
+                                    "SparePartNumber",
+                                    "SerialNumber",
+                                    "BuildDate",
+                                    "Model",
+                                    "Manufacturer"
+                                ]
+                            },
+                            "Address": {
+                                "description": "The address of the register.",
+                                "type": "number"
+                            },
+                            "Size": {
+                                "description": "The size of the register in bytes.",
+                                "type": "number"
+                            }
+                        },
+                        "required": ["Name", "Address", "Size"]
+                    }
+                },
+                "DataParity": {
+                    "description": "The parity to use for data transmission.",
+                    "enum": ["Odd", "Even", "None"]
+                },
+                "BaudRate": {
+                    "description": "The baudrate of the communication channel.",
+                    "enum": [9600, 19200, 57600, 115200]
+                }
+            },
+            "required": [
+                "Name",
+                "Type",
+                "Address",
+                "Registers",
+                "DataParity",
+                "BaudRate"
+            ]
+        }
+    }
+}