Jopto 5PCS 4x3 Matrix Array 4 x 3 12 Switch Keypad Keyboard Module 12 Key MCU Membrane Switch Keypad Compatible with Arduino

• 4 × 3 button design, total 12 buttons on one keyboard module. It provides 0 to 9 numbers, as well as standard stars (*) and hash(#) symbols.
• 4x3 Matrix Array 12-switch keypad allows easy communication and scanning through the pad with only 8 microcontroller pins.
• 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.
• Keyboard matrix allows you to quickly add controls to your electronic project. Direct replacement, a simple plug and play with no wire splicing.

Features: The keyboard modules are used for single chip microcontroller. 4 × 3 button design, total 12 buttons on one keyboard module. It provides 0 to 9 numbers, as well as standard stars (*) and hash(#) symbols. Small size, save space, convenient to use and connect. These are great choice for external keyboards of microcontroller. Keyboard matrix allows you to quickly add controls to your electronic project. Easy to install thanks to four mounting holes on each corner. Specification: Model: 4x3 Matrix Array 12 Switch Keypad Button: 16 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, *, #) Material: ABS Color: Black Size: 69.5 × 51 × 10 mm Weight: 17.5 g Package Content: 5 × 4x3 Matrix Array 12 Switch Keypad