diff --git a/src/revpi_middleware/ios1/interface_ios.py b/src/revpi_middleware/ios1/interface_ios.py
index 49cda12..9038c0b 100644
--- a/src/revpi_middleware/ios1/interface_ios.py
+++ b/src/revpi_middleware/ios1/interface_ios.py
@@ -18,6 +18,12 @@ class InterfaceInput:
     """
     <node>
         <interface name="com.revolutionpi.ios1.Input">
+            <method name="SetByteorder">
+                <arg name="order" type="s" direction="in"/>
+            </method>
+            <method name="SetSigned">
+                <arg name="signed" type="b" direction="in"/>
+            </method>
             <property name="address" type="n" access="read"/>
             <property name="bmk" type="s" access="read"/>
             <property name="bitaddress" type="n" access="readwrite"/>
@@ -58,6 +64,12 @@ class InterfaceInput:
                 [],
             )
 
+    def SetByteorder(self, order: str) -> None:
+        self.byteorder = order
+
+    def SetSigned(self, signed: bool) -> None:
+        self.signed = signed
+
     @property
     def address(self) -> int:
         return self.io.address
@@ -123,6 +135,15 @@ class InterfaceOutput(InterfaceInput):
     """
     <node>
         <interface name="com.revolutionpi.ios1.Output">
+            <method name="SetByteorder">
+                <arg name="order" type="s" direction="in"/>
+            </method>
+            <method name="SetSigned">
+                <arg name="signed" type="b" direction="in"/>
+            </method>
+            <method name="SetValue">
+                <arg name="value" type="v" direction="in"/>
+            </method>
             <property name="address" type="n" access="read"/>
             <property name="bmk" type="s" access="read"/>
             <property name="bitaddress" type="n" access="readwrite"/>
@@ -138,6 +159,9 @@ class InterfaceOutput(InterfaceInput):
 
     interface_name = "com.revolutionpi.ios1.Output"
 
+    def SetValue(self, value: Variant) -> None:
+        self.value = value
+
     @property
     def value(self) -> Variant:
         return super().value