SimpleTimer - Biblioteca

**Estou com problema para adicionar a biblioteca SimpleTimer.h **

Aparece o seguinte erro.

sketch_may06a:1:25: fatal error: SimpleTimer.h: No such file or directory

#include< SimpleTimer.h>

                     ^

compilation terminated.

exit status 1
SimpleTimer.h: No such file or directory

Go to the library manager, search for SimpleTimer and install it.
From the IDE: Sketch->Include Library->Manage Libraries…