Perfect for stairwells and hallways, the 4ft LED Surface Mount has dual motion sensors that increases its light output to 3000 lumens (26 watts) when motion has been detected. The 4ft LED Surface Mount consumes only 10.5 watts of power during standby mode, drastically reducing operational costs while maintaining a lighted presence. Dual motion sensors can be directed to target a specific area. Equipped with an Emergency Battery Backup, this luminaire will continue to operate providing 450 lumens of light output for up to 90 minutes in the event of a power failure or disruption.