... with back-light Option: RS232 interface - optional Crane scale,electronic crane scale,wireless crane scale,dynamometer,load cell, force tester1. 25mm LCD ... /lb/N/KN units 5. Low power warning6. High duty stainless shackle and hook7. Overload warning programmable set8 ... Infrared remote control calibration10. Standard function in remote controller: Zero,Tare,Clear,Peak,Accumulate,Hold,Unit,Voltage etc ...