In festival days, we switch ON the lights of our corridor, balconies or staircase. In the case when people have lighting done at two different locations, they have [[wysiwyg_imageupload::]]to go to two different places to switch ON the light but, with the help of this circuit, you can switch ON both the lights with a simple touch. This simple circuit is built around CD4013 which has two independent flip flops on a single chip and each module is further equipped with a group of  pin outs assigned as data, set, reset, clock input and a couple complementary output Q and NOT Q. CD4013 is a 14 pin IC which contains two independent sets of flip flops and in our circuit we are utilizing both. Read on more to find out how the circuit is made and how it works.