1、Portable laser line meter instrument, very suitable for laying tiles, installing photos, door and window or furniture carpentry, wall construction, etc. 2、It adopts class 2 630‑670nm bright and slender red light source, with high visibility and high accuracy, to meet the needs of indoor and outdoor use. 3、With self‑leveling function, it supports 4°±1° automatic leveling. Once the levelness is within 4°±1°, the internal leveling is automatic to provide high accuracy. 4、IP54 protection level, splashproof design, multiple protections, safety and stability, can work continuously for about 15 hours. 5、The red beam leveling tool is small in size, light in weight, easy to carry, and can meet a variety of leveling operations and building construction. Item Type: Laser Line Meter Material: ABS Model: T01 Power Supply: 4 x AA 1.5V Battery (Battery Not Included) Purpose: Laser Marking Technical Instruction/Model T01 Laser Class Level 2 Laser Wavelength Red beam 630-670nm Leveling Accuracy ±3mm / 10m Leveling/Compensation Range 4°±1° Working Distance (Line) The red beam is 15 meters Operating Hours About 15 hours Protection Level IP54 Working Temperature Range -10℃-50℃ Storage Temperature Range -25℃-70℃ 1 x Laser Line Meter (Battery Not Included) 1 x Bracket 1 x Tool Bag 1 x Manual