diff --git a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac300.py b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac300.py
index b94bd5f..7a9cc8f 100644
--- a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac300.py
+++ b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac300.py
@@ -69,7 +69,7 @@ class AC300(ProtocolV1Device):
     def writable_ranges(self) -> List[range]:
         return super().writable_ranges + [
             range(3001, 3017),
-            range(3061),
+            range(3061, 3062),
         ]
 
     @property
diff --git a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac500.py b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac500.py
index e9b6832..2def5c0 100644
--- a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac500.py
+++ b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ac500.py
@@ -68,7 +68,7 @@ class AC500(ProtocolV1Device):
     def writable_ranges(self) -> List[range]:
         return super().writable_ranges + [
             range(3001, 3017),
-            range(3061),
+            range(3061, 3062),
         ]
 
     @property
diff --git a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500.py b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500.py
index 0f374c6..59101d6 100644
--- a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500.py
+++ b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500.py
@@ -64,7 +64,7 @@ class EP500(ProtocolV1Device):
     def writable_ranges(self) -> List[range]:
         return super().writable_ranges + [
             range(3001, 3017),
-            range(3061),
+            range(3061, 3062),
         ]
 
     @property
diff --git a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500p.py b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500p.py
index 872874c..62b62de 100644
--- a/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500p.py
+++ b/custom_components/bluetti_bt/bluetti_bt_lib/devices/ep500p.py
@@ -64,7 +64,7 @@ class EP500P(ProtocolV1Device):
     def writable_ranges(self) -> List[range]:
         return super().writable_ranges + [
             range(3001, 3017),
-            range(3061),
+            range(3061, 3062),
         ]
 
     @property