These are rare hypothetical fire alarms that might exist, but we don't know where. All of these are based off of info from the Fire Panel forums. 1. White Simplex 2903 with red lens 2. Wheelock 7002T with red lens 3. German-language Simplex 2903 4. System Sensor MASS ADA horn strobe in white 5. Blue Simplex 2904 6. Amber Simplex 2904
https://forums.thefirepanel.com/t/rarest-fire-alarms-you-have-seen-inside-a-building/11305/59?page=3 https://forums.thefirepanel.com/t/predict-undocumented-fire-alarm-variants/14553
