diff --git a/custom_components/solax_modbus/plugin_solis.py b/custom_components/solax_modbus/plugin_solis.py
index 60d6e844..fcafaea3 100644
--- a/custom_components/solax_modbus/plugin_solis.py
+++ b/custom_components/solax_modbus/plugin_solis.py
@@ -2419,6 +2419,7 @@ async def async_determineInverterType(self, hub, configdict):
         elif seriesnumber.startswith('1033'):  invertertype = HYBRID | X3 # Hybrid Gen6  10kW - HV
         elif seriesnumber.startswith('110C'):  invertertype = HYBRID | X3 # Hybrid Gen5 0CA2 / 0C92 10kW - HV
         elif seriesnumber.startswith('114C'):  invertertype = HYBRID | X3 # Hybrid Gen5 10kW - HV
+        elif seriesnumber.startswith('1805'):  invertertype = HYBRID | X3 # PV Only Gen5 5-20kW
         elif seriesnumber.startswith('6031'):  invertertype = HYBRID | X1 # Hybrid Gen5 3105 / 3122 Model 6kW - 48V
         elif seriesnumber.startswith('1031'):  invertertype = HYBRID | X1 # Hybrid Gen5 3104 Model 5kW - 48V
         #elif seriesnumber.startswith('abc123'):  invertertype = PV | X3 # Comment