How to assemble and use 300kg Electronic Digital Portable Crane Scale? Calibration Limit unboxing

This industrial hanging scale manufactured by Suofei features rugged and ergonomic die cast construction, back-light LCD display for high visibility in dark conditions and is battery powered for convenient portable weighing.
Suofei SF-916 scale weights items up to 300 kg or 650 pounds for very accurate and fast weight measurements. Powered by batteries this Hanging Scale ensures more than 150 hours of operation and is available in capacities of 100 kg and 300 kg, both models with maximum safety load of 120% Full Scale. Suofei SF-916 Hanging Scale is exceptionally durable and well suited for multiple purposes and bulk weighing.