Thank you, but in the meantime, what virtual sensor best fits my use case : counting single pulses with minute (or even seconds) acuracy ?

Hello,

I'd like to record in Domoticz the pulses issued from my energy meters.
I've got 4 (and more to come) energy meters in my setup, each sending 1 pulse for 1W consumed.
I have not definitely chosen the way these pulses will be pushed to Domoticz, but probably by using Arduino/ESP8266 with ...