... the former indicator, no need to re-calibrate, only to input parameter of former indicator3)Embodies with automatic gravimetric filling instruments ... different applications5)1-2 materials available for plus/minus scale; external, self-testing, and free max and min modes are available ... serial printer.Relay output: capacity of AC: 220v, 0.5AExternal input: on/off touch point (on/off controls in effect), ...