System Sensor L-Series and MDL - Will it sync?

[DJDiehl2K]

@cerbpyro

@Comments2010

Is the System Sensor L-Series compatible with the MDL Module?

According to the data sheet, L-Series signals are compatible with the System Sensor MDL3. It should have some backwards compatibility, but the sync protocol support for the OLD first-generation SpectrAlert Classic MDL modules was phased out in a minor revision to the Advance line several years ago.

System Sensor | Honeywell Building Technologies

I guess I’ll just have to find out in my next system test if I’ll need to replace my MDL with an MDL3. I’m thinking that it’ll at least synchronize the strobe, iffy on the horn. I’m doubting that selective silence will work but who knows. I don’t know how System Sensor’s sync protocol works or if it changed much. I’ll just have to find out.