diff --git a/modbus_sungrow.yaml b/modbus_sungrow.yaml
index 8e84cd2..ea95140 100644
--- a/modbus_sungrow.yaml
+++ b/modbus_sungrow.yaml
@@ -1,7 +1,7 @@
 # Home Assistant Sungrow inverter integration
 # https://github.com/mkaiser/Sungrow-SHx-Inverter-Modbus-Home-Assistant
 # by Martin Kaiser
-# last update: 2024-10-14 (2)
+# last update: 2024-10-14 (3)
 #
 # Note: This YAML file will only work with Home Assistant >= 2023.10
 
@@ -1253,7 +1253,7 @@ modbus:
         address: 13019 # reg 13020
         input_type: input
         data_type: uint16
-        precision: 0
+        precision: 1
         unit_of_measurement: V
         device_class: Voltage
         state_class: measurement