@Yveaux : interesting post with the current measurements, thanks. I was more focused to adapt the nRF library to try to have an interrupt possibility when a radio message is received

@AWI : yes, the sleep is already implemented in my sketch, the fact is that I'm using an old fashioned PIR that I have hacked, removing the RF part and replacing it with an nRF. The whole think is powered by a 9v cell. The newest PIR's showed above are probably much more efficient regarding power needs. That's why I was really looking to have some possibility to play with the interrupt system from the nRF library

Hi there,
Is there any way to wake up from sleep when a radio message is received ? I run a battery powered motion sensor, and after a few months the battery is empty, due to a lot of motion triggering putting the arduino out from sleep mode : in the motion detector sketch - this is the sketch I'm actually using - the PIR output is connected to one of the two interruptable pins, so at each movement detected, there is an interrupt waking up the pro mini. I would like to put the node in std-by during the presence of someone in my house, and put the node in active mode when the house is empty, and I would like to do this over the air.
Thanks for your ideas