Entering your grow room when your lights are off is a very bad idea. Exposing your plants to light when they are expecting darkness will confuse them and could cause anything from mild stress to making them hermaphrodite. If you absolutely have to access your plants in the night cycle you need a LED Green Light.
Lumii Green LED Work Light
We stock a powerful rechargeable and heavy duty Green LED Work Light delivering 600 lumens of green light or Lumii Green LED Head Lamp and Green LED Cap Light which both are battery operated and fully portable in size.