... ,5t,10t,15t,20t,30t,40t,50t 3.OIML III Crane scale for mining Introductions:It can be used with a ... receiver.Without calibration, it can support the use of electronic crane scale with various tonnage.2.Easy to operate:Instrument adopts ... battery, work on 48 hour full chargedWireless transmission>=200m open terrain,450MHZ or 230MHZOverload warningInstrument shows overload, sound alarm, and alarm ...