?Professional-Grade Accuracy? SRC-400 refrigerant scale has a high capacity of up to 220lbs/100kg with an accuracy of ?0.05%, high resolution of 0.011lbs. It features secure overload detection that displays "FULL" and an alarm to protect sensors. Ideal for use with all refrigerant types and accurate measurements. ?Durable Construction? The freon scale is made of aviation-grade aluminum and features 4 rubber armor corners that provide resistance to collisions. The 9 x 9" platform surface is coated with a textured rubber material to prevent tanks from slipping during measurements. ?Multi-Function Capability? Professionally designed refrigerant scale with multi-function capability including Auto-zero button (Tare function), self-test in 2s after power-on, auto-shutdown feature if weight unchanged for 10 minutes. The LCD screen of panel shows battery life (up to 40 hours) and has Unit Conversion (LB/ OZ/ KG). ?Convenient Easy to Use? The handheld controller of the refrigerant scale has a convenient hanging hook for placement where needed, and the extra-large LCD display is easy to read from any angle. The panel features an auto-off function that can be set to turn off after 10s or always on. ?Better Experience? The refrigerant scale comes with a rugged nylon scale bag with shoulder strap for easy carrying to all work locations. It is backed by a one-year warranty and lifetime customer service, ensuring zero risks for the user.