Adtec digital RD-30 (version 2.1.1) Manual - Manual (Page 19)

Key Instructions
An unlock key can be provided via email or verbally if internet access is not available. To enter the unlock key:
Step Action
1 Click on the ‘Input Key’ button.
2 Enter the supplied key into the pop-up dialog box and click OK.
3 The feature status should change from ‘ Un-licensed ’ to ‘ Licensed ’.
4 In some cases, a reboot of the unit may be required after enabling a feature key.
10.29.14- v2.1.1