Minimal wiring: only VCC, GND, SDA, SCL

Blue LED backlight with adjustable contrast

Works with LiquidCrystal_I2C, hd44780 and ESPHome

Perfect for displaying sensor data, status messages, menus

Small, inexpensive and easy to integrate

Display: 16 columns × 2 rows (HD44780 compatible)
I²C Backpack: PCF8574 (typical addresses: 0x27 or 0x3F)
Operating voltage: 5V (SDA/SCL often tolerant to 3.3V)
Backlight: Blue LED (on/backlight control via backpack)
Dimensions: ~80 × 36 mm (module dependent)