: It is powered by a single CR2450 button cell battery . Essential Setup Steps from the Manual According to the Zemismart ZMT6 Product Guide, these steps are required for first-time use:

When you receive your new ZMT6 controller, follow these steps before powering on:

: Move the curtain to the fully closed position and hold the Stop button again.

The site supplying most of the MP3 files to the Red Hot Jazz Archive pages on Syncopatedtimes.com is down and many links no longer work. You may find the original Redhotjazz.com and download all of the original RealMedia .ra music files on the WayBackMachine at Archive.org. 

https://web.archive.org/www.redhotjazz.com