4D Laser Level - (4 X 360) 16 lines for finer positioning, 360 horizontal lines and 2 vertical lines allow parallel alignment on floors, ceilings and walls. They have corresponding buttons on the device and the remote control. [Auto level up to 3] Automatic leveling at 3, but when the angle of the cross laser exceeds 3, the laser light keeps flashing and a beep sounds to remind you to reset the level of the ground. Or it can be set to manual mode to project diagonals. [Green Line Laser] - Cross line laser, accuracy 2mm/10m, wavelength: 532nm green light, working range: diameter about 25m, IP54 dustproof design and anti-splash. Remote control - A = vertical line, B = horizontal line. The remote control also has an adjustable laser light brightness function. Press and hold A to lighten and long press B to dim. Easy to use-Laser level with wall-mounted and lift-up base, T-shaped wall-mounted base has a 360 rotating base, allowing the line laser to quickly find the target (1/4 inch screw size). Comes with a window clamp bracket for use with wall brackets. Can be used with a tripod with 5/8" thread to adjust the working height of the machine.