based on passive infrared induction technology, this directional sensor night light is an auto-controlled product incorporating a sensor and high brightness LED. only when a person gets out of bed, the directional sensor night light will be automatically on, not respond to a sleeping person's turning over in bed. This feature can never be reached by an ordinary sensor light used for a night light in bedroom. While providing lighting for getting up in the night, this product can well ensure persons' sleep to the full as an excellent sleep helpmate home or in hotels.