A car parts place near me has a small tester & if you push a button on the key fob, and a red light on the tester flashes, then the key fobs sending a signal.
Thats about all that i can tell you. Except ebay might sell testers, it would be a simple receiver circuit.
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I checked to see if theres a app that will do that. Most reviews of apps claiming to seem to be negitive.
In theory i think there might be a working app that will do it.
Or even a breadboard DIY receiver circuit or a way to hack one up outta parts.
I have a cheap ( US$5 ) signal tester for picking up 'bugs'. I will try that out right now.
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Hey COOL!! IT WORKS!!!! It does detect car alarm/remote car door unlocking keyfobs.
Mines a [ CC308+. ] Several $ cheapo ( US$6 ) thats already earnt its purchase price.
https://www.amazon.com/Worldoor-Mult.../dp/B00W32PLYS
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