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BUY E831819 https://www.utsource.net/itm/p/11759974.html

Description: The E831819 is a 4x4 matrix keypad controller with a built-in ELO Touch Technology. Features: - 4x4 matrix keypad - Built-in ELO Touch Technology - Low power consumption - High noise immunity - Supports up to 16 keys - Programmable debounce time - Supports I2C and SPI communication Applications: - Industrial control - Automotive - Home appliances - Security systems - Point of sale terminals (For reference only)