Xiaomi Mijia Smart Laser Rangefinder 3mm High Precision 40m Laser Ranging Type-C Charging With Mijia APP Real Scene MeasurementProduct parameterProduct model MJJGCJYDO01QWDimensions 80x 35x21mmProduct net weight 60gMeasuring range 0.05*-40mMeasurement accuracy (3mm+5 10-5 D*)Charging parameter 5V =1AMinimum display unit 0.001mBluetooth transmiion distance is about 8m (without obstacles)Product ListLaser rangefinder1Charging cable1Instruction manual x1Notice1* 3mm high-precision measurement: The measurement accuracy data is related to the actual measurement distance, which can be calculated by the formula (3mm+5 10-5 D*).2*The minimum measurement range needs to be measured with a front-end reference.3*After fully charged, use the button tester to perform the "power on + laser emiion + data measurement + power off" action about every 10 seconds, until the power is out, the test can be cycled continuously for 3000 times.Cla 4*2 laser has slight radiation and will not cause permanent damage to the retina of the eye, but please do not look directly into the beam.5*"D" means actual distance, indoor standard reflective surface environment. In harsh environments such as: too strong sunlight, exceive environmental temperature fluctuations, weak reflection on the reflecting surface, and insufficient battery power, the measurement results will have larger errors. In this case, the effect of using the target reflector is better. There are also situations that affect the measurement: the objective lens or laser tube is blocked by foreign objects; the measurement target is not clear, such as water surface, gla, mirror surface; laserjitter during measurement, etc. High-precision Measurement Mijia APP Smart Measurement Full Power Measurement 3000 Times Industrial Grade Durability Test Real time Distance Meter After the laser is fired in real time, the rangefinder will display the current length in real time. Choose a precise and stable second cla laser, as close as 5m and as far as 40m. Double-iue Single-receive , mm Measurement Accuracy Double-iue Single-receive laser, laser emiion-calibration-display data, the accuracy can reach 3mm. Double-iue Single-receive , Laser Accuracy House Measurement , Soft Package Measurement Decoration Measurement , Furniture Measurement Mijia APP , Multiple Functions Connect the mobile phone via Bluetooth and link with the Mijia app to realize data synchronization/remarks, length/area/volume calculation, floor plan surveying and mapping, drawing sharing and other functions. * Rangefinder to connect the Mijia app, need 6.9.200 version or higher. Floor Plan / Real Scene Painting Measurement You can directly draw a floor plan in the Mijia APP or take real photo and then draw and measure. The measured data is automatically marked to the selected line, APP intelligently adjusts the length of the line according to the marked data. Area / Volume / Length Calculation You can flexibly select the existing length, width, and height data for area and volume calculations, and you can also simply add and subtract to calculate the length. Remote Measurement The mobile phone can be used as a "distance finder remote control" to remotely control the rangefindermeasurement. It is suitable for the scene where the rangefinder/human-machine separation must be placed at a fixed point. Single Button Design Long pre for 2s to turn on, short pre to start measurement, double click to switch between front and back benchmarks. Long Pre 2s - Turn on/off Short Pre - Start/end measurement, record measurement data Double click - Before and after switching benchmarks High Brightne LCD Screen High Brightne LED Screen , Display of current measurement data, historical measurement data, measurement reference, measurement unit, power, and Bluetooth connection status. Measurement standard/laser emiion reminder Bluetooth connection status Electric quantity Historical measurement data Current measurement data Unit of measurement (M/FT) Double Matte Material , Anti-wear Scratch-resistant Aluminum alloy + high-strength engineering plastics, dual materials to create a matte appearance. Wirele Charging Design Type-C Charging Long Battery Life 370mAh Large capacity lithium battery , 3000 sets of data can be measured at full power