Quick Detail: Custom TN segment LCD panel, 50.85 x 29.85 mm outline, 28 metal pins Reflective (positive) display mode, no backlight required, zero static power Customized icons for flow measurement: LTR, GAL, PT, QT units and L/Min scale Wide operating temperature: -20°C to +70°C AC waveform driving, 1/4 duty, 1/3 bias, compatible with HT1621 driver IC RoHS compliant, ideal for flow meters, testers and industrial instruments Description: This 50.85 x 29.85 mm TN segment LCD