"This useful night light features a bright neon which automatically lights up when it gets dark. Uses sensitive CDS cell and reliable simple circuitry. Kit comes complete with an attractive plastic lens that you can glue onto the PC board (glue not included). Operates from standard 120 VAC and comes with all parts, lens and PC board (size of PC board: 3"" x 3""). Due to the fact that this kit plugs into the wall outlet, we do not recommend it to be built by beginning students even though it is a simple kit. Skill Level 2. "