When were the Siemens HMS and OP devices released?

Does anyone know when these devices, such as the HMS-S and the OP921 were originally released? I’m working on a post about “What if my schools had been built with different FA systems”, and I’ve been able to find everything I need on the wiki, except for the release date of these. It would be extremely helpful to know.

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My records are saying for the HMS, 2023, while the OP is showing 2020. To be exact, The OP921, came out in late 2019. The pull station, HMS-S came out in 2025.

I definitely appreciate the help, but I think you might be mistaken. I have examples of these devices being installed at least as far back as 2013 in my area.

The main thing I’m wondering (for everyone, not just @simplex_4903-9238 ) is whether or not the XLS protocol devices were available in 2007-2008. I know the FireFinder XLS was released in the very early 2000’s, but did it just use MXL devices back then?

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I wonder if the XLS protocol can even be used on Faraday MPC-6000 panels. I’m thinking it can because they had HMS-S pulls at the Patriot Academy in Dandridge, TN and it was on a Faraday MPC-6000 system.

Same thing with the FireFinder, it uses that protocol as well because it’s just a rebrand of the Faraday MPC-6000 if you will.

There was a different protocol for MPC and Siemens panels back in the day, so they did not work between brands. Could be different now but I doubt it.

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I think it is changed, considering, again, that my freshman school Patrol Academy in Dandridge had an MPC system with Siemens HMS-S pulls.