2004 (20x4) Character Green LCD with I2C Backpack Illuminated arcade button switch contact

Illuminated arcade button switch contact type is SPST normally open momentary switch

The I2C backpack also allows you to change the I2C address of the module

Board Pin - Function - ESP8266 Pin

Measures Capacitance Up to 100mF

so it's doesn't vary if your power supply voltage changes slightly

2004 (20x4) Character Green LCD with I2C Backpack Illuminated arcade button switch contactGreen backlight with black text character LCD. The LCD display has the I2C backpack module mounted on the back side which requires only two connected wires for data and two wires to supply ground and +5V to power the display. The I2C backpack also allows you to change the I2C address of the module, see Solder Jumper Configurable I2C Addresses link below under Resources. Specifications Black characters on green background Characters: 20 columns, 4 rows