These two modules are Bluetooth Low Energy modules which has a maximum TX output power of +3 dBm. Based on the TX output power, it comes under Class 2. But because it is a BLE module it supports a maximum operating range of 50m.
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Thank you very much for your help.
If max TX output power is +3dBm, the output power is about 2mW according to below equation.
W=1mW x 10^(3/10)=2mW
I agree with you.