diff --git a/NUKI-DEVELOPER-%7C-Nuki-Bridge-HTTP-API.md b/NUKI-DEVELOPER-%7C-Nuki-Bridge-HTTP-API.md
index 6fda592..d59c871 100644
--- a/NUKI-DEVELOPER-%7C-Nuki-Bridge-HTTP-API.md
+++ b/NUKI-DEVELOPER-%7C-Nuki-Bridge-HTTP-API.md
@@ -1,5 +1,7 @@
 # Nuki Bridge HTTP API V1.13.0
 ### 30.11.2021
+
+
 ## 1. Introduction
 The REST API on the Nuki Bridge offers simple endpoints to list all available Nuki Smart Locks and Nuki Openers, retrieve their current lock state and perform lock operations.
 ### 1.1 Abbreviations used
@@ -11,6 +13,7 @@ The REST API on the Nuki Bridge offers simple endpoints to list all available Nu
 | lng    | Lock 'n' Go     | Unlock and lock again automatically                                                 |
 | rto    | Ring to Open    | Nuki Opener State in which ringing the bell activates the electric strike actuation |
 
+
 ## 2. Calling URL
 This is the address used to call the available services of the internal webserver.
 
@@ -77,4 +80,49 @@ http://192.168.1.50:8080/info?token=123456
 http://192.168.1.50:8080/info?ts=2019-03-05T01:06:53Z&rnr=4711&hash=f52eb5ce382e356c4239f8fb4d0a87402bb95b7b3124f0762b806ad7d0d01cb6
 
 A hashed token will only be valid with a sufficiently current timestamp and can not be reused, to prevent replay attacks. So making two calls with the exact same timestamp will only work with different random numbers.
-To debug problems with non synchronous times you can check the current time on the bridge via bridge discovery
\ No newline at end of file
+To debug problems with non synchronous times you can check the current time on the bridge via bridge discovery
+
+
+## 4 States and Actions
+### 4.1 Device Types
+Nuki device connected to the bridge.
+
+0 ... smartlock - Nuki Smart Lock 1.0/2.0
+2 ... opener - Nuki Opener
+3 ... smartdoor - Nuki Smart Door
+4 ... smartlock3 - Nuki Smart Lock 3.0 (Pro)
+
+### 4.2 Modes
+| mode | smartlock | opener          | Description                         |
+| ---- | --------- | --------------- | ----------------------------------- |
+| 2	   | door mode | door mode       | Operation mode after complete setup |
+| 3    | -         | continuous mode | Ring to Open permanently active     |
+
+**Note:** Only modes 2 and 3 can appear in JSON elements, as the HTTP API is not available in the other modes.
+
+### 4.3 Lock States
+Possible lock states (used in Endpoints below).
+| ID  | smartlock              | opener     |
+| --- | ---------------------- | ---------- |
+| 0	  | uncalibrated           | untrained  |
+| 1	  | locked                 | online     |
+| 2	  | unlocking              | -          |
+| 3	  | unlocked               | rto active |
+| 4	  | locking                | -          |
+| 5	  | unlatched              | open       |
+| 6	  | unlocked (lock ‘n’ go) | -          |
+| 7	  | unlatching             | opening    |
+| 253 | -                      | boot run   |
+| 254 | motor blocked          | -          |
+| 255 | undefined              | undefined  |
+
+### 4.4 Lock Actions
+Possible lock actions (used in Endpoints below):
+| ID  | smartlock                | opener                     |
+| --- | ------------------------ | -------------------------- |
+| 1	  | unlock                   | activate rto               |
+| 2	  | lock                     | deactivate rto             |
+| 3	  | unlatch                  | electric strike actuation  |
+| 4	  | lock ‘n’ go              | activate continuous mode   |
+| 5	  | lock ‘n’ go with unlatch | deactivate continuous mode |
+