Wireless doorbells using FSK

12.5.2018
Wireless doorbells using FSK

Usually wireless doorbells use OOK modulation. I managed to find two models which use 2-FSK modulation.

Friedland Libra+ 48249SL





Honeywell ActivLink DC515xx



Friedland signal analysis with Audacity. Pattern (marked in the image) is repeated for approx. 1.8 seconds.

Friedand signal analysis with Universal Radio Hacker






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