Interesting Edwards Horn

I recently acquired an Edwards horn from an eBay reseller. It was new old stock and the horn is in great condition. However when I search the model number on YouTube, nothing on the horn comes up. It looks exactly like and 882-1B, except it’s an 881-1B. I have the documentation, and it is a legitimate member of the 880 series of horns. As far as I can tell, it’s functionally identical to the 882, the only difference I can find is that there’s no pitch adjustment potentiometer to be found. Has anyone else heard of this horn, or better yet, does anyone else have this horn?

The 881-1B appears to be a 12VDC version of the 882-1B. Here are the 881-1B’s specifications:

In comparison, the 882-1B is a 24VDC horn with a current draw of 36 mA.

You think you can make a video of it? We need more Adaptahorn videos as the old Edwards horn on YouTube.