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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@fanoush
yes. LE in BLE means low energy, that means everything is completely off most of the time unless you actively start something, so if you don't use any BLE feature it is off completely. if you don't enable BLE advertising for the device to be seen, or don't try to scan or connect to other device(s) there is nothing to do for the radio hardware so it is completely off all the time. nothing is running on the background unless you run code to start and use it
that checkbox unchecked means radio hardware has nothing to do and is off. there is no other state of the radio hardware that would be more 'off' than this