This device complies with Part 15 of the FCC Rules. Operation is subject to two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
and keep a printed copy of the official PDF in your equipment folder. The MTTL-W01 is a robust tool—when you understand its manual, it becomes an indispensable asset. mttl-w01 manual
The MTTL-W01 Manual outlines several modes of operation depending on the dip-switch or jumper configuration on the board. This device complies with Part 15 of the FCC Rules
If you still cannot find a solution, the final page of the official manual lists a phone number and live chat: (Mon-Fri, 9 AM – 5 PM EST). Have your device serial number ready. mttl-w01 manual