Brennenstuhl OL 02R is an LED night light with a twilight sensor. It's suitable for dry spaces indoors and can't be used outdoors. The light is equipped with a twilight sensor that turns it on automatically when it gets dark and off when it gets light. The light is non-replaceable and the device is unopenable. The device is suitable to ensure you won't stumble in the dark. The device is not a toy and should be kept away from children.