Good product no problem. Note:i used with esp8266 at 3,3V, it power-on and works normally. only problem with 3,3V is low luminosity and contrast.
1. The IIC 2004 LCD display module is a 4 line 20 character LCD module not only set the contrast control knob selector switch also has a backlight and IIC communication interface. For Arduino beginners, not for the cumbersome and complex LCD driver circuit connection And a headache, the real significance of this LCD module will simplify the circuit, this module directly into the for Arduino Sensor Shield V5.0 sensor expansion board IIC device interface can, For GM 4P sensor connection cable, programmed through the for Arduino controller, You can easily identify the slogan, sensor data records. 2. Supply voltage: 5V 3. Interface: I2C 4. I2C address: 0x27 5. Pin definition: GND, VCC, SDA, SCL 6. Contrast adjust: potentiometer 7. The module is a low-power consumption character LCD module with a built-in controller 8. The module can be easily connected with an MCU 9. Display format: 20 Characters x 4 lines 10. Fully assembled and tested serial LCD 20 x 4 module White text, blue backlight 11. It is fantastic for Arduino based project 12. Material: fiber components
Dimensions and Weight
Product weight: 0.1100 kg Package weight: 0.1200 kg