I contact the support of SONOFF / eWeLink product.
I ask to have a integration with Homey Athom.
They tell me that they will plan to implement all are request from the customers.
so please if other are interest to this, ask the same to sonoff support at :
I don’t want to use actual APP on Homey because request to change the sw on the Sonoff component (to complicate) and with IFTTT I see 3,5 second on delay.