| Number of Characters Display Format Character Format Display Type Display Mode Character Size Outline L x W x H Viewing Area Backlight Voltage - Supply Dot Size Interface Operating Temperature | 40 20 x 2 5 x 8 Dots STN - Super-Twisted Nematic Transflective 5.55mm H x 3.20mm W 116.00mm x 37.00mm x 13.50mm 83.00mm L x 18.60mm W LED - Yellow/Green 4.7 V ~ 5.5 V 0.60mm W x 0.65mm H I²C, RS232, SPI -20°C ~ 70°C Blue |