Feature:1. It adopts 2level 505550nm green light beam with strong penetrating power and high visibility and the working distance is about 30 meters.2. The selfleveling function allows this tool to be used on any plane of 41. Once the level is 41, the internal leveling will be automatic.3. Used for various leveling and alignment applications, suitable for laying tiles, installing photos, door and window or furniture carpentry, hanging wallpaper, etc.4. It adopts splashproof design, IP54 protection grade, safe and reliable, stable performance, and can work continuously for about 8 hours.5. Small ib size, light in weight, easy to operate, compact and portable design, convenient for users to carry, suitable for indoor and outdoor use.Specification:Item Type: Laser Line MeterMaterial: ABSModel: T02Power Supply: 4 x AA 1.5V Battery (Battery Not Included)Purpose: Laser MarkingTechnical Instruction/ModelT02Laser ClassLevel 2Laser WavelengthGreen light 505-550nmLeveling Accuracy3mm / 10mLeveling/Compensation Range41Working Distance (Line)The green beam is 30 metersOperating HoursAbout 8 hoursProtection LevelIP54Working Temperature Range-10-50Storage Temperature Range-25-70.Package List:1 x Laser Line Meter (Battery Not Included)1 x Bracket1 x Tool Bag1 x ManualNote:Do not irradiate the eyes directly with the laser.