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GND: Power Gound
SCL: CLK clock (High level 2.2V-5.5V)
SDA: MOSI data (High level 2.2V-5.5V)
Color: Blue and Yellow LED
Wide power supply range: DC 3V-5V
Temperature: -30°C to 70°C
Dimension: 29.28 x 27.1 mm (LW)
Compatible with 3.3V and 5V control chip I / O level
OLED internal drive chip: SSD136
1 x Blue and Yellow OLED display