... ×4 characters liquid crystal display screen, single chip, RS232 communication port, signal receiving circuit, storage circuit ( 999 articles of data), clock circuit, rechargeable batteries and ... )Measuring Error: ≤ 0.01%Displaying Screen: 8×4 character liquid crystal displayMeasuring Methods: WiredTemperature Range: -10°C-45°CPower Consumption: <30mAPower ...