\begin{circuitikz}[scale=.6,transform shape]
%\draw[gray,very thin] (0,0) grid (10,10);
\draw (0,0)to[battery1](0,4);
\draw (0,4) to [nos=$\mathrm{K_A}$](2,4);
\draw (2,4)to[lamp=$\mathrm{L_1}$](2,0);
\draw (2,4) -- (3.5,4);
\draw (3.5,4) to[nos=$\mathrm{K_B}$](3.5,2);
\draw (3.5,2) to[lamp=$\mathrm{L_2}$](3.5,0);
\draw (0,0) -- (3.5,0);
\end{circuitikz}