diff --git a/device_services/generic/output_binary_switch.md b/device_services/generic/output_binary_switch.md
index 638f916..172b76d 100644
--- a/device_services/generic/output_binary_switch.md
+++ b/device_services/generic/output_binary_switch.md
@@ -8,11 +8,14 @@ Output binary switch service acts as an on/off switch for wall-plugs, relays, si
 
 ## Interfaces
 
-| Type | Interface             | Value type | Description                                                                      |
-|------|-----------------------|------------|----------------------------------------------------------------------------------|
-| in   | cmd.binary.get_report | null       | Requests report of the binary state.                                             |
-| in   | cmd.binary.set        | bool       | Sets the binary state.                                                           |
-| out  | evt.binary.report     | bool       | Reports `true` when the switch is **on** and `false` when the switch is **off**. |
+| Type | Interface                    | Value type | Description                                                                      |
+|------|------------------------------|------------|----------------------------------------------------------------------------------|
+| in   | cmd.binary.get_report        | null       | Requests report of the binary state.                                             |
+| in   | cmd.binary.set               | bool       | Sets the binary state.                                                           |
+| out  | evt.binary.report            | bool       | Reports `true` when the switch is **on** and `false` when the switch is **off**. |
+| in   | cmd.default_state.get_report | null       | Requests report of the default binary state after power up.                      |
+| in   | cmd.default_state.set        | bool       | Sets the binary state default binary state after power up.                       |
+| out  | evt.default_state.report     | bool       | Reports binary state after power up - `true` then **on**, `false` when **off**.  |
 
 ## Examples
 
@@ -48,4 +51,4 @@ Output binary switch service acts as an on/off switch for wall-plugs, relays, si
   "uid": "90bfaa87-a9cf-4b8d-97a0-69faf543f6bb",
   "topic": "pt:j1/mt:evt/rt:dev/rn:zigbee/ad:1/sv:out_bin_switch/ad:4_1"
 }
-```
\ No newline at end of file
+```