1x4/3x4/4x4/4x5 Matrix Array 4 to 20 Keys Switch Keypad Keyboard for Arduino UK
1x4/3x4/4x4/4x5 Matrix Array 4/12/16/20 Keys Switch Keypad Keyboard. Single chip microcomputer extended keypad. Life Expectancy: 1 million closures. Product specifications for keypads. Operation Temperature: -20 to +60 °C.