Source google image: https://3.bp.blogspot.com/-1yIdSc8sWlA/WDQT3EEwjSI/AAAAAAAAAY8/zqPrMoVQM08EoliEo01nxjGwKH5I8NP5gCLcB/s1600/minuterie%2B4%2Bfils.jpg
Schema electrique 4 fils
Source google image: https://3.bp.blogspot.com/-1yIdSc8sWlA/WDQT3EEwjSI/AAAAAAAAAY8/zqPrMoVQM08EoliEo01nxjGwKH5I8NP5gCLcB/s1600/minuterie%2B4%2Bfils.jpg