4D laser level / laser level 4x360 self leveling / laser level tool / self leveling laser level / laser level line tool. Self / Manual Leveling Mode: Turn on the power to self-leveling mode, the cross line laser will be automatically leveled within 3°, otherwise the cross line laser will send out an alarm with the lasers flashing; Keep the power off, press and hold the brightness button for 3s to turn on/off the manual leveling mode, which can be placed at any angle of use.
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