What are the materials for car key covers that do not affect signal transmission?
3 Answers
Car key covers can be made of silicone or leather materials, and it is advisable to avoid metal key covers. Below is an introduction to remote car keys: 1. Advantages of remote keys: Remote keys allow users to lock and unlock their cars from a distance without inserting the key into the keyhole. The biggest advantage is that, regardless of day or night, users can conveniently lock and unlock their cars from a distance without needing to locate the keyhole. 2. Principle of remote keys: The key emits a weak radio wave, which is received by the car's antenna. The electronic control unit (ECU) then identifies the signal code, and the system's actuator (motor or electromagnetic coil) executes the locking or unlocking action. The system mainly consists of a transmitter and a receiver.
I'm particularly fond of buying car key covers and found that silicone ones don't affect the signal at all. Last time I tried a TPU plastic cover which was also very reliable, and thin leather ones worked fine too. The key is that the material must not contain metal, and pure fabric covers also don't interfere with the signal. When choosing a key cover, you need to check the product description, as many merchants now label them as being made of non-signal-interfering materials. However, be aware that while very thick covers don't affect the signal, the button feel can become worse. Also, some designs with metal rings don't work well either – the metal-framed key cover I used before required me to be very close to the car to unlock it.
As a car owner, I think choosing the right material is crucial. Silicone cases are the top choice—affordable and ensure smooth signal transmission. Leather cases are also reliable, but make sure the lining has no metal components. Fabric cases are usable, though they're a bit troublesome to clean. A word of advice: never buy chrome-plated or crystal-encrusted decorative cases, as these metal materials can weaken the signal in no time. My neighbor bought an alloy key case last month and now has to walk within half a meter of the car to unlock it. Most mainstream brands nowadays use signal-friendly materials, so just check the product details page before purchasing.
