HALJIA 4 x 3 Matrix Array 12 Switch Keypad Keyboard Module 12 Key MCU Membrane Switch Keypad Compatible with Arduino

• The 4x3 -12 Switch matrix keyboard module is made by high quality plastic and metal material which is very durable and reliable.
• It provides 0 to 9 numbers, as well as standard stars (*) and hash(#) symbols.
• Keyboard matrix allows you to quickly add controls to your electronic project. Direct replacement, a simple plug and play with no wire splicing.
• Easy to communicate with any microcontroller. This module is compatibile with microcontrollers such as AVR and PIC which makes it a perfect choice for your Arduino applications and projects.
• Its small size and compact design make this switch more convenient in module alarm/safety device operation, access control, and device control.

Features: 12 Key（4x3）matrix keyboard module. Keyboard matrix allows you to quickly add controls to your electronic project. It provides 0 to 9 numbers, as well as standard stars (*) and hash (#) symbol. Easy to communicate with any microcontroller. Easy to install thanks to four mounting holes on each corner. Size: 69.5 × 51× 10 mm Weight：17.5g Packing List: 1 x 4x3 12 Switch Keyboard Module