... controlled for precision accuracy, calibration is easier with wireless indicator.Standard Features: Rugged construction. Accuracy: 0.05% ... TARE","CLEAR", "PEAK","ACCUMULATE","HOLD","UnitChange","Voltage Check" and "Power OFF",4 local mechanical keys:"ON/OFF","ZERO ... 10 ~ + 40Operating Humidity:≤85% RH under 20Remote Controller Distance:Min. 15mWireless Frequency:2.4GHz(default),433MHz,860MHz(optional ...