HM10 BLUETOOTH BLE 4.0 CLONE
Regarding HM10 CLONEs , mostly they import clones made by Bolutek co.
Original is made by JNHuaMao tech. co.
HM10 clones use same TI chip but the second oscillator is missing
Bolutek clones are actually CC41-A modules & not HM10. They use the same TI chip but on board there is only one OSC instead of two.
They use same TI chip but firmware is their own.
So you cannot expect it to work like original , some key functions may not work.
Vcc to clone is 3.3v , no on board regulator.
Bluetooth version is v4.0 for BLE