Domotic return state remote control - Raspberry Pi Forums

hi all,

information create domotic.
have raspberry pi 2b, , want command light it.

solution:
rpi connecting on relays connecting on remote control in switchboard , i want keep room switch.
no problem

problem:
want return on raspberry pi state of light, is on/off. remote control can return information 230v 10a, gpio accept 3.3v , 16 ma.

how can modify 230v 10a 3.3v 16ma ?

thanks

sorry english, i'm french

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