SincereetaliThis product is highly accurate, precise and reliable. Simple operation, long endurance. Ls-p has 11 kinds of practical measurement functions, such as single measurement, continuous measurement, maximum and minimum value, angle measurement, area measurement, before and after reference, angle / height measurement with one key, easily covering all kinds of measurement needs. Features: Professional measuring tool with a measurement accuracy of up to 1 mm and a measurement time of 0.2 seconds. High-precision integrated molding process, 5 round arc polishing sandblasting, comfortable grip. USB fast charging, long endurance. The new living space, window height, sofa size, staircase angle, etc. can be measured, convenient and efficient. Lightweight and portable, easy to carry. Specifications: Item Type: Diastimeter Material: ABS + Aluminum Alloy Maximum Range: 40M Range Error: 2mm Package Weight: 80g / 2.82ounces Package Size: 150 * 100 * 60mm / 5.9 * 3.93 * 2.36inches Package List: 1 * Diastimeter 1 * USB Cable 1 * Strap 1 * User Manual Common Problem: 1. What is the measuring range and accuracy of the LS-P rangefinder? Under the general conditions of LS-P, the measuring range is 0.03-40 meters, and the measurement accuracy is 2mm. The measuring range is 0.03-25 meters under adverse conditions, and the measurement accuracy is 3mm. 2. What are the functions of the LS-P rangefinder? The LS-P rangefinder supports common single measurements, continuous measurements, angle display, front and rear reference switching, area measurement, volume, one PIP measurement, secondary pole measurement, one-button distance measurement and other practical functions. 3. Does LS-P last long? Is the usage cost high? The LS-P has a built-in 200mAh lithium polymer battery optimized by algorithms and a battery life of up to 3,500 measurements. After 5 minutes of charging, it can be continuously measured 300 times, and the battery consumption has almost no usage cost in the later stage. 4. How can I measure more accurately? In daily measurements, friends should keep the rangefinder static and not shake as much as possible; nor can it block the laser emission and reception window of the LSP. Based on physical principles, errors may occur when measuring on the surface of some objects. For example: a transparent surface (water surface, glass), a reflective surface (polished metal), a porous surface (sound insulation material), if necessary, a target (such as white paper) can be placed on the object to obtain accurate Oh, the data. 5. Are lasers safe? The internal LS-P laser is a Class 2 laser certified by the international laser IEC60825 and uses less than 1 mW. Daily use does not cause any harm to the human body. However, the high-brightness laser will cause visual damage to the eyes in the short term. Therefore, it is strictly forbidden to shoot directly at the eyes of people and animals to avoid accidental injury.