Source google image: https://1.bp.blogspot.com/-lq9y98B5djI/U315FnN528I/AAAAAAAABjg/WEUjmrZhojs/s200/horloge+et+ontacteur+interrupteur+cr%C3%A9pusculaire.jpg
Lumandar schema electrique
Source google image: https://1.bp.blogspot.com/-lq9y98B5djI/U315FnN528I/AAAAAAAABjg/WEUjmrZhojs/s200/horloge+et+ontacteur+interrupteur+cr%C3%A9pusculaire.jpg