Adtek ST-LC Measuring 2 channels 0~10V / 0(4)~20mA or 0~10.0mV/~100.0mV and single display screen with Mathematic function Addition / Subtraction / Multiplication / Division / high or low selector. Available Isolated between input 1, input 2, output and power with plug-in conditioner with display and operating key. The accuracy: ± 0.04%, Display range: -19999~99999, 1 Analogue output, 1 RS485 port and 1 Relay output available for multi-cross selection 2 outputs at most.