BoardUp EA-12 Laser Level Specifications: Laser Class: Class 2 (IEC/EN60825-1/2014), <1mW power output Laser Wavelength: 505-520nm Horizontal/Vertical Accuracy: ±1/9" at 33 Ft. Plumb Dot Accuracy: 1/9" at 33 Ft. Leveling/Compensation Range: ±3.5° Working Distance (Line): 130Ft.(100 LUX) ,180Ft. with Huepar Line Laser Receiver Operating Time: 4 hours with all laser beams on Power Source: 4×˝AA˝ (LR6) IP Rating: IP54 Operation Temperature Range: 32℉ ~ 113℉ (0℃~ 45℃) Mount Size: 1/4"-20 and 5/8"-11 Multiple Line Switching Functions This laser level projects three green beam laser lines in 360° laser planes – one is horizontal and two are vertical, so that users can accurately and quickly execute level, align, square and plumb applications. Users can employ the three independent 360° planes independently or together with the press of a button. Seven Line switching modes can be selected freely accordingly: Vertical&Horizontal Lines mode one, Vertical&Horizontal Lines mode two, Two vertical lines, Horizontal line, Vertical line one mode, vertical line mode two. Read more Re-enforced structure design. provides a reliable pendulum self-leveling system with clear, bright laser level lines, and a 90-degree vertical plumb spot feature. EV-12 level enables a multitude of alignment and layout applications. Read more Self-leveling mode & Manual mode When the laser tool is switched to the unlocked position, self-leveling mode is enabled. The laser beam will blink continuously at 2Hz when the tool is beyond self-leveling range (4°±1°). When the pendulum locked, you can place the laser tool at various angles to project non-level straight lines. The laser beam will blink every 3-5 seconds to remind you that it's not self-leveling now. If the objects are too far away or it is under direct sunlight.The beam is invisible to the eye. You can use the optionalEasyAlign EA-D Universla Rotry Laser Receiver Detector. Laser receivers can shorten the amount of time needed to find the beam and get on level. Once laser receiver detects the laser beam from EA-12 (laser level needs to be set to pulse mode) on the green line mark, it generates a beep Sound. And the green light is on. Read more Precious instrument yet rugged and durabel The main body is made in aluminum to protect optical component well. The TPE materail for each corner case ensure ruggedness in tight outdorr enviorment. 3 360 plane Any complicated construction application with high accuracy 1.5mm/7m Manual mode allows various angles Turn the power switch in OFF mode. Then press the manual mode button to enable this mode. Rugged and waterproof The package includes base plate and wall mount plate. good for most user cases. Read more