Denso 4EA Key Fob

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Denso 4EA Key Fob
HYQ4EA KeyFob.jpg
Frequencies 433.92 MHzMegaHertz (MHz) 10^6 Hz433,920,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
433,920 kHzKiloHertz (kHz) 10^3 Hz
433,920 kHzKiloHertz (kHz) 10^3 Hz
433.92 MHzMegaHertz (MHz) 10^6 Hz
433,920 kHzKiloHertz (kHz) 10^3 Hz
433.92 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 433.92 MHzMegaHertz (MHz) 10^6 Hz433,920,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
433,920 kHzKiloHertz (kHz) 10^3 Hz
- 433.92 MHzMegaHertz (MHz) 10^6 Hz433,920,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
433,920 kHzKiloHertz (kHz) 10^3 Hz
Mode AMAmplitude Modulation
Modulation AMAmplitude Modulation,ASKAmplitude-Shift Keying
ACFAutoCorrelation Function
Bandwidth 15 kHzKiloHertz (kHz) 10^3 Hz15,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.015 MHzMegaHertz (MHz) 10^6 Hz
15 kHzKiloHertz (kHz) 10^3 Hz
0.015 MHzMegaHertz (MHz) 10^6 Hz
15 kHzKiloHertz (kHz) 10^3 Hz
0.015 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description Denso Wireless Key Fob 4EA built by Denso Corporation for General Motors auto brands Chevrolet and Buick. Used on Chevrolet Camaro and Malibu from 2016+. Used on Buick Lacrosse 2017+.
I/Q Raw Recording Download file
Audio Sample
Denso 4EA Key Fob is a wireless key fob built for General Motors of North America by Denso Corporation in Japan. Used on Chevrolet Camaro and Malibu from 2016+. Used on Buick Lacrosse 2017+. The wireless key fob utilizes either ASKAmplitude-Shift Keying or FSKFrequency-Shift Keying modulation. (In this page, only ASKAmplitude-Shift Keying is shown).

Pulse width is measured to be 120 us, giving an effective max datarate of 8333 bpsBits per second (bps). Frame width is 34.3ms.

Samples[edit]

AMAmplitude Modulation Demodulated:

USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) Demodulated:

Samples captured from a 2017 Chevrolet Malibu in the United States. A 4-button model was used to test. Each button was pressed, which results in a frame train. There are 4 frame trains heard in these samples. IQ sample provided in the infobox is the raw recording of this test.

Frequencies[edit]

433.92 MHzMegaHertz (MHz) 10^6 Hz

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]