diff --git a/Commands.md b/Commands.md
index 9a639672..ad971b40 100644
--- a/Commands.md
+++ b/Commands.md
@@ -445,6 +445,10 @@ SetOption69|**6.6.0.5**
`0` = Disable Tuya Dimmer 10%
SetOption71|**6.6.0.14**
Set DDS238 Modbus register for active energy
`0` = set primary register *(default)*
`1` = set alternate register
SetOption80|**6.6.0.14**
`0` = Disable shutter support *(default)*
`1` = Enable shutter support
SetOption81|**6.6.0.14**
Set PCF8574 component behavior for all ports
`0` = set as regular state *(default)*
`1` = set as inverted state
+
### Serial Bridge
Both Hardware and Software Serial Bridge are supported.