\documentclass[border = 1mm,convert]{standalone}
\usepackage[utf8]{inputenc}
\usepackage{siunitx}
\usepackage[european,RPvoltages,straightvoltages]{circuitikz}
\usetikzlibrary{babel}

\title{Élec}
\begin {document}

\begin{circuitikz}[scale=2,transform shape]


\draw (0,0) 
  --++(0,2)
  to [lamp] ++ (0,2)
  to [battery2, l=\SI{6}{V}] ++ (4,0)
  to[short, -*] ++ (0,-2)
  to[short] ++ (0,-2)
  to[lamp] ++ (-2,0)
  to[nos] ++ (-2,0)
  -- (0,0);
\draw (0,2)
  to[Do] ++ (4,0);


\end{circuitikz}
\end{document}