diff --git a/SunGather/config-example.yaml b/SunGather/config-example.yaml
index 4b0e372..babffdc 100644
--- a/SunGather/config-example.yaml
+++ b/SunGather/config-example.yaml
@@ -5,9 +5,10 @@ inverter:
   # retries: 3                              # [Optional] Default is 3, how many times to retry if connection fails
   # slave: 0x01                             # [Optional] Default is 0x01
   # scan_interval: 30                       # [Optional] Default is 30
-  connection: sungrow                       # [Required] options: modbus, sungrow, http
+  connection: modbus                       # [Required] options: modbus, sungrow, http
   # model: "SG7.0RT"                        # [Optional] This is autodetected on startup, only needed if detection issues or for testing
                                             # See model list here: https://github.com/bohdan-s/SunGather#supported
+  # serial: xxxxxxxxxx                      # [Optional] This is autodetected on startup, only needed if detection issues or for testing, used as a unique ID
   # smart_meter: True                       # [Optional] Default is False, Set to true if inverter supports reading grind / house consumption
   # use_local_time: False                   # [Optional] Default False, Uses Inventer time, if true it uses PC time when updating timestamps (e.g. PVOutput)
   # log_console: INFO                       # [Optional] Default is WARNING, Options: DEBUG, INFO, WARNING, ERROR
@@ -72,8 +73,8 @@ exports:
     # username:                             # [Optional] Username is MQTT server requires it
     # password:                             # [Optional] Password is MQTT server requires it
     # client_id:                            # [Optional] Client id for mqtt connection. Defaults to "SunGather", need to be set to different values if you want to run multiple instances of sungather.
-    homeassistant: True                     # [Optional] Default False, Publish discovery and sensors for HomeAssistant
-    ha_sensors:                             # [Optional] / [Required] ha_discovery: True, Topics to enable discovery for HA
+    homeassistant: False                     # [Optional] Default False, Publish discovery and sensors for HomeAssistant
+    ha_sensors:                             # [Optional] / [Required] homeassistant: True, Topics to enable discovery for HA
       - name: "Daily Generation"
         sensor_type: sensor
         register: daily_power_yields
diff --git a/SunGather/registers-sungrow.yaml b/SunGather/registers-sungrow.yaml
index e04bc65..fba1b07 100644
--- a/SunGather/registers-sungrow.yaml
+++ b/SunGather/registers-sungrow.yaml
@@ -23,7 +23,7 @@ registers:
       datatype: "U16"
       models: ["SH5K-20","SH3K6","SH4K6","SH5K-V13","SH5K-30","SH3K6-30","SH4K6-30","SH5.0RS","SH3.6RS","SH4.6RS","SH6.0RS","SH10RT","SH10RT-V112","SH8.0RT","SH6.0RT","SH5.0RT"] 
     - name: "serial_number"
-      level: 1
+      level: 3
       address: 4990
       datatype: "UTF-8"
     - name: "device_type_code"
diff --git a/SunGather/sungather.py b/SunGather/sungather.py
index 5f5ec15..d749ebc 100644
--- a/SunGather/sungather.py
+++ b/SunGather/sungather.py
@@ -27,6 +27,7 @@ class SungrowInverter():
         self.inverter_config = {
             "slave":            config_inverter.get('slave'),
             "model":            config_inverter.get('model'),
+            "serial":            config_inverter.get('serial'),
             "level":            config_inverter.get('level'),
             "use_local_time":   config_inverter.get('use_local_time'),
             "smart_meter":      config_inverter.get('smart_meter'),
@@ -111,6 +112,25 @@ class SungrowInverter():
                     self.registers.pop()
                     break
 
+        if self.inverter_config.get('serial'):
+            logging.info(f"Bypassing Serial Detection, Using config: {self.inverter_config.get('serial')}")
+        else:
+            # Load just the register to detect model, then we can load the rest of registers based on returned model
+            for register in registersfile['registers'][0]['read']:
+                if register.get('name') == "serial":
+                    register['type'] = "read"
+                    self.registers.append(register)
+                    if self.load_registers(register['type'], register['address'] -1, 5): # Needs to be address -1
+                        if isinstance(self.latest_scrape.get('serial'),int):
+                            logging.warning(f"Unknown Type Code Detected: {self.latest_scrape.get('serial')}")
+                        else:
+                            self.inverter_config['model'] = self.latest_scrape.get('serial')
+                            logging.info(f"Detected Serial: {self.inverter_config.get('serial')}")
+                    else:
+                        logging.info(f'Serial detection failed, please set model in config.py')
+                    self.registers.pop()
+                    break
+
         # Load register list based on name and value after checking model
         for register in registersfile['registers'][0]['read']:
             if register.get('level',3) <= self.inverter_config.get('level') or self.inverter_config.get('level') == 3:
diff --git a/SunGather/version.py b/SunGather/version.py
index f0891e5..efc7796 100644
--- a/SunGather/version.py
+++ b/SunGather/version.py
@@ -1 +1 @@
-__version__ = '0.3.8'
\ No newline at end of file
+__version__ = '0.3.9'
\ No newline at end of file