Over what distance will a Class 1 device communicate with a Class 2 device?
Communication between 2 devices is governed by the capability of the lower power device. Class 1 devices have a maximum output power of 100mW / 20dBm and an expected of range of up to 100m Class 2 devices have a maximum output power of 2.5mW / 4dBm and an expected of range of up to 10m Class 3 devices have a maximum output power of 1mW / 0dBm and an expected of range of up to 10cm The expected ranges assume an unobstructed environment between the two devices.