What is the standard PAN (Personal Area Network) range of Bluetooth 4.0?

The standard range of Bluetooth 4.0 for a Personal Area Network (PAN) is typically up to 100 meters (328 feet) in open space. However, this range can be affected by obstacles such as walls and interference from other electronic devices, which may reduce the effective distance. In indoor environments, the range is generally shorter, often around 10 to 30 meters (33 to 98 feet).