Various embodiments of hazard detectors are presented. A hazard sensor may be present that detects the presence of a hazardous condition. A light sensor may be present that detects an ambient brightness level. A motion sensor may be present that detects motion of a user. A light may be present that is capable of outputting light. A processing system may receive an indication of the ambient brightness level in the ambient environment of the hazard detector from the light sensor. The processing system may determine that the ambient brightness level is less than a threshold brightness. The processing system may receive information indicative of the user moving in the ambient environment of the hazard detector. The processing system may cause the light to illuminate based on the ambient brightness level being below the threshold brightness and the user moving in the ambient environment of the hazard detector.