OP stated in the video and has confirmed on Discord that it indeed flashed yellow.
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Are there any recordings of the horns doing broadband T4? The video you embedded as well as the video discussed in this thread both show 3000 Hz T4. Also, the latter recording does not appear to have yellow flashing, so the flash color might be a separate component of the new sync protocol (possibly for amber MNS alerts), or it might be related to the FCP candela.
It happened to mine also when I had a slight disconnect while powering my p2grled and it made temporal 4 3000hz instead of the selected tone.
Did your strobe flash yellow? It looked white in the video you recorded.
Mine didnt it was normal strobe that flashed I used 12 volts
The yellow flash is probably a separate feature that is meant to replace dual strobes for combined fire/MNS systems. Many online photos of LED L-Series strobes have a yellow component in the middle of the strobe lens, which might be how the flash becomes yellow.
was the strobe selector on fcp? maybe I used to low voltage and wrong strobe setting
To be fair, that one was set to an invalid tone.
Did that happen when it was set to a valid tone?
That would make the most sense, however I fail to see how that would be allowed on fire-marked devices. Guess weâll see when Honeywell releases new information or productsâŚ
It probably isnât allowed to be used in general, but it is easier to make one strobe board for use on all devices instead of making separate fire/MNS strobe boards. Also, a FIRE-marked device could later have an ALERT bezel added to it, making the yellow flash usable, and on a FIRE-marked device, the yellow flash could potentially be used for private mode.
when it did t4 when I switched it to a normal tone, It didnt do yellwow strobe but ill have to expirement some more to see if i need to select fcp on the strobe selector Mine is a p2grled so maybe it also only works on the p2rled
I figured the t4 out! It says on the back of the alarm that 1,2,5,6 sounds are Temp3/TEMP4 ! even in broadband
sorry for bad video: IMG_2471.MOV - Google Drive