Line/Dot Laser Level w/ Detector 5 Dot (2V)(3H) 2 Line Combination Self Leveling Range w/Detector 300 ft. Range w/o Detector Lines - 150 ft. Dots - 200 ft. 5 Modes Plumb Down Yes Plumb Up Yes Power Source (3) AA Alkaline Batteries Accuracy +/-1/8 in @ 50 ft. Auto Leveling Range +/-4 Degrees Grade/Slope Level Only Number of Beams 5 Beam Color Red Laser Class IIIa Wavelength 635nm Max Output 5 mW Visual/Audible Indicators Yes Auto Shutoff No