What is the general sensing distance of a car key?

[Hall]

The general sensing distance of a car key is 10-50 meters. However, this depends on whether there are obstacles or interference from other electronic devices nearby. If there are obstacles or electronic interference, the sensing distance will be affected. Additionally, insufficient battery power in the remote can significantly impact the signal reception distance. Below are several situations that may occur when the key battery is low: 1. Key malfunction: Suddenly, you may find that you need to press the button several times before getting a response, which indicates low battery and the signal not being transmitted. 2. Dim indicator light: Remote keys usually have a small indicator light that illuminates when operated. If the light becomes dim, it also indicates low battery. 3. Shortened remote distance: If the key originally responded to long-distance remote operation but now only responds when close, this also suggests low battery. Of course, unresponsiveness could also be due to excessive nearby signals causing the car to fail to react promptly. Some thieves exploit this, so it's essential to develop the good habit of closing the door after exiting the car and giving it a manual pull to ensure it's locked.