Features:  Output 12 laser lines for finer positioning, with self-leveling system, flexibility and stability.  Adopts optical glass, fine transmission, with clear laser light.  Equipped with ±5° automatic leveling function, and English voice broadcast function, more intelligent and more convenient.  Four press buttons design, one H button, one V button, one M button and one P button, horizontal line and vertical line with a clearly division.  Comes with one remote control, antenna design, with wear resistant button, high sensitive quickly switch the line mode, and with comfortable hand feeling.  Comes with wall-mounted bracket, can be easily attached to the floor tiles, wall stickers, and ceilings, all 7mm pitch.  The wall bracket has 360° rotatable base, and equipped with fine adjustment mechanism, can make the machine quickly find the target.  Functional lifting platform design, 360° rotation structure, with bubble-level to help you to check whether the tripod is horizontal or not.  Easy to carry with the plastics carrying-case, providing quick and convenient mobility and storage.  Waterproof and dustproof, suitable for both indoor and outdoor use.    Usage:  1. Press the P button to boot, the machine starts self-testing (the right flash flashes), after the flashing light keep constant light indicates that means the self-test is success.  2. H=horizontal line, V=vertical line.  3. Long press M button 3 seconds turn on or off the slash-function.  4. Long press P button 3 seconds turn on or off voice function.  5. Equipped with ±5° automatic leveling function, the leveler has a slight tilt, the right light will flicker, and you can see the laser line slowly move, after the flicker is completed, the indicator light will constant light, that means the leveling is successful.    Note:  The laser output maker is located on the output hole.  Do not stare directly at the laser light.  Do not disassemble the instrument and perform internal repairs by yourself.  This instrument meets the laser radiation safety rating standard.    Specifications:  Name: Laser Level  Main material: plastics+metal  Laser ray: 3D, 12 lines  Battery:  Laser level:  2 * rechargeable battery, 3.7V, 1500mAh (included, you will find there are two 18650 batteries inside if disassemble one)  Remote controller: 1 * alkaline battery, 12V, 50mAh (included)  Range: 20m in diameter  Laser lines accuracy: ±0.2mm/1m  Auto-leveling-range: ±5°  Working temperature: -10& 8451; to 50& 8451;  Item size:  Level machine: 122 * 98 * 100mm / 4.80 * 3.86 * 3.94in  Platform size: 137 * 124 * 75mm / 5.39 * 4.88 * 2.95in  Wall mounted bracket size: 165 * 85 * 67mm / 6.50 * 3.35 * 2.64in  Package size: 335 * 290 * 145mm / 13.19 * 11.42 * 5.71in  Package weight: 2324g / 5.