This fellow here is the 2001T-SRNB. Like the 2001T-133, the 2001T-SRNB is a dual tone version of the 2001 sirens (2001-SRNB in this case). And unlike the 2001T-133, this thing is 8/12 port, and it is on a square back allowing it to go up to 130 decibels, the same decibel meter as the 2001-130.
Original audio from Broken Solar Panel from YT