Test Command Item
Sends a test command in control direction (client->server).
The item type has the following properties:
| Name | Description | ID | Flags | 
|---|---|---|---|
| CA | Common address | 18700 | Persisted | 
To trigger a test command:
- Configure the test command with the properties listed above;
 - Set a new value on the item - not sent to server, only used for triggering a test command;
 - On success; the value on the item is set;
 - On failure; the value on the item is not set - check log for more information.