i went to your link and then clicked on info this is what it say.
Model 3 Key Fob
The Model 3 Key Fob – shaped like a miniature version of your Model 3 – offers an alternate way to access your car. It is ideal for owners who don’t use the Phone Key feature on their smartphone.
Press the top of the Key Fob once to lock your Model 3 and twice to unlock; press twice on the front or rear trunk to open them. Unlike the Phone Key and the Model S and Model X Key Fobs, the Model 3 Key Fob does not support passive entry.
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No hands required. Locking and unlocking your Model 3 has never been easier. Keep your key fob in your pocket and simply pull on the door handle for easy entry. Same with the trunk. Your key fob is automatically enabled when you pair with your vehicle.
Gift box includes key fob and coin cell batteries.
Can we trade in are old non-passive fobs v1? My passive phone entry never worked reliably despite trying everything. Even with the fob v1, I am often digging for my keys in my pocket to place it on the center console. The entry theatrics and the lack of screen mirroring with my phone are what have my Tesla as the back-up car.