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• This product is mainly used for object acceleration and speed measurement, particular person customers can use it to measure the design velocity of all types of taking pictures playthings Features: Aluminum alloy, stainless-steel material, help rod, speed measurement, calories measure, velocity energy, searching through checklist and view average This product is made through DIY, with concise and practical, accurate and durability for the point It is principally used to learn and ride the power of the SCM to process records at high speed, and it would measure the flying velocity of various projectiles Such as: desk tennis, badminton, bow, arrows, physical acceleration experiment, projectile free fall experiment, nerf playthings velocity measurement, children&;s smooth playthings, and many others The core substances are industrial-grade package, stable performance, small error This product for the speed of one to 999 meters consistent with second projectile with accurate pace The software model has the benefits of extensive positive induction area, handy use and excessive sensitivity Strong adaptability to ambient light, indoor and outdoors can be used during the day and evening Can save 20 units of data, you will find the common Specifications: Voltage: DC 6V Battery(not included): 4 * AA battery Working Temperature: -30℃ - 60℃ Accuracy: verify error ≤0% Measuring Range: 1-999 M/S (FPS differ 30-999) Standard three tripod can be installed This product would not contain tripod and batteries Notes: This product is infrared radiation type, the light supply has been integrated within the machine, no external light supply Recommended for use in low gentle environments The darker the ambient light, the better the machine functionality For outdoor use and powerful mild conditions, a light protect should be added When measuring the rate of the projectile with higher velocity Please take appropriate protecting measures In order to avert the rebound of the projectile after hitting the mechanical device and inflicting harm Observe the marking on the left and correct aspects of the light bar when installing, and the strip with the light is dealing with down Package List: 1 * One Set of Speed Measuring Instrument Instructions for WIFI version:1: Install the battery2: The exterior round gap plug needs to be inserted into the mechanical device (USB power supply)3: Open the cellphone WIFI settings, discover the HT-50, the relationship password is 88888884: Open the browser and enter the URL 8 to view the data on the mobile phone

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