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A 250 subscriber special. A test of my IBM 4030-1B horn with an antique ADT Underwriters Laboratories, Inc 862986 coded pull station that I recently added into my collection last week. It came with a break glass hammer, but unfortunately, it did not come with the break glass plate. This coded pull station does code 3-4 as well. I believe this ADT coded pull station was made in either the 1930s, or 1940s. If anyone who sees this video knows when this coded pull was made, let me know in the comments below.
Like what I said in previous videos. This horn was formerly youtuber thesdx's horn.