1. Support I2C protocol2. With backlight power control, you can set whether to connect the backlight power through the jumper cap. Plug in the jumper cap to connect the backlight power, unplug the jumper cap to disconnect the backlight power3. The contrast can be adjusted. Rotate the blue potentiometer to increase clockwise and decrease counterclockwise. The potentiometer is designed on the front, which is convenient for customers to adjust freely anytime and anywhere4. Modules can be cascaded, up to 8 can be cascaded. Modify the device address by shorting A0/A1/A2. The default address is 0x275. Weight: 5g6. Size: 41.5x19x15.3mm8. Power supply voltage: 2.5-6v9. Note: LCD screen is not included10. Delivery list: one IC module (pearl cotton + anti-static packaging

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