The signal reception range of a Bluetooth keyboard is influenced by several factors:

Bluetooth Version: Different Bluetooth versions have different transmission distance limitations. Older Bluetooth versions (such as Bluetooth 2.1) typically have shorter transmission distances, while newer versions (such as Bluetooth 5.0) can provide longer transmission ranges.

Environmental Obstacles: Physical obstacles in the environment can affect the propagation distance and quality of Bluetooth signals. For example, walls, furniture, metal structures, etc., can weaken the signal and reduce the transmission distance. When using a Bluetooth keyboard, if there are obstacles between the keyboard and the receiving device, the signal transmission may be affected.

Electromagnetic Interference: Other electronic devices, wireless network devices, and sources of electromagnetic interference (such as microwaves) can interfere with Bluetooth signals, thus affecting the transmission distance and quality.

Relative Position between the Keyboard and the Receiving Device: The effectiveness of Bluetooth signal transmission is usually optimal when there is not a significant physical distance between the keyboard and the receiving device, preferably within the range of the receiving device's coverage.

It is important to note that the signal reception range of a Bluetooth keyboard is limited and may be influenced by the above factors in practical usage. Therefore, when using a Bluetooth keyboard, it is recommended to keep the keyboard as close to the receiving device as possible, avoid obstacles that could cause interference, and ensure that there is not an excessive distance between the keyboard and the receiving device to achieve better signal quality and stability.

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