Feature: 1. It has a 500m working distance and 360°rotatable function with the clear, bright and stable lines. 2. Red beam for marking, suitable for frame structure, shelves and etc.. 3. Line up your entire work area from floor to ceiling. 4. Kits provide a positioning system to make your work efficient and accurate. 5. When the instrument is set upright, it will emit beam to form a horizontal scanning and a vertical line automatically. 6. When set horizontally, it will form a vertical scanning and a vertical line. 7. With 5 degree self levelling range and 500m diameter measurement range. 8. Controlled by temperature-stable sensors for auto alignment. 9. Two working modes design, you can adjust manual mode or automatic mode according to your demands. 10. Rotating direction adjustable, left rotation will makes the module step move counter clockwise, and the right rotation will makes the module step move clockwise. 11. Speed adjustable, the speed of scanning includes 5 knots: 0-60-120-300-600-0 r.p.m. 12. Angle adjustable, the angle of scanning includes 5 levels: 0-10°-45°-90°-180°. 13. And also support to adjust the slope of X/Y axis while under manual mode. 14. All functions can be used with remote controller. 15. Included a pair of goggles, easily view the among the strong sunlight. 16. Comes with one firm black carry box with tenacious buffer material inside. 17. It can be widely used in architecture construction, equipment installation, indoor decoration and so on. Specification: Specifications: Name: Levelling Machine Material: ABS+metal Battery: Host battery: 1 * 6V, 3500mAh battery (included) Receiver battery: 1 * 6F22 battery, 9V, 300mAh (included) Remote controller battery: 2 * LR03 battery, 1.5V, 100mAh (not included) Water Proof: IP54 Leveling accuracy: horizontal: ±20″; vertical: ±20″ Leveling range: ±5° Measuring diameter: 500m Rotating speed: 0、60、120、300、600 r.p.m Directional-scanning angle: 0°、10°、45°、90°、180° Slope-adjusting-range: ±5°(Bi-directional) Light source: wavelength: 635nm Down point diode: accuracy: ±1mm/1.5m Remote controlling distance: approximately 20m Working temperature: -10℃ to 45℃ / 14℉ to 113℉ Item size: Host size: 210 * 190 * 155mm / 8.27 * 7.48 * 6.1in Receiver and handle size: 153 * 200 * 65mm / 6.02 * 7.87 * 2.56in Remote controller size: 112 * 47 * 25mm / 4.41 * 1.85 * 0.98in Glasses size: 150 * 57 * 62mm / 5.91 * 2.24 * 2.44in Item weight: 4527g / 9.98lb. Package List: 1 * Levelling Machine1 * Carrying Box1 * Glasses1 * Target1 * Receiver and Handle1 * Remote Controller1 * Power Adapter2 * Keys1 * Carrying Strap1 * User Manual