Makita has an expanding line of laser instruments engineered for increased accuracy and productivity. Get the right accessory with the Makita Laser Detector (TK0LDG301F), for use with Makita Self-Leveling Laser, model SK209GD (laser sold separately). The Laser Detector is capable of detecting horizontal and vertical laser lines up to a distance of 65 feet, and laser detection is indicated by red/green/orange light indicators and sound buzzers. It is engineered for quick and accurate detection of laser lines even in bright conditions. Includes auto power-off for increased battery power conservation.