This is a high quality 20 x 4 line intelligent display module, with back lighting, works with almost any microcontroller. It is based on the HD44870 display controller hence it is easy to interface with most micro controllers. It works of 3.3v and has a blue back light which can be switched on and off as desired. 

Technical Specification:

• Color of Display : Blue
  
• Color of Character : White
• Size : 20 x 4 (20 character x 4 rows)
• Input Voltage : +5V
• Supply Current : 8mA
• Display Dimensions : 76mm x 25mm (LxB)

Features:

• 20 characters wide, 4 rows
• White text on the blue background
• Single LED backlight included can be dimmed easily with a resistor or PWM
• Can be fully controlled with only 6 digital lines! (Any analog/digital pins can be used)

 Applications:

• Electronic equipment's
• Medical equipment's
• Fax machines
• Laser printers
• Industrial test equipment
• Networking equipment
• Smart homes