... design, ABS plastic housing. 2,manufacturer. 3,weighing indicator. weight indicator1,Handset design, ABS plastic housing.2,manufacturer.3,weighing ... will turn off automatically after 30minutes with no operation.Technical Data : A/D conversion methodΣ-ΔInput signal range-3mV~15mVLoad ... transmission frequency450MHzWireless transmission distance100 meters (in wide place) weight indicator 280