4 X 3 Flexible Matrix Keypad Membrane Switch Keyboard USB Cable power indicator LED and an

power indicator LED and an adjustable sensitivity though a potentiometer

Input Voltage 5 - 12 V

23sec/60degree (4

it can sense if your plant is already thirsty

Built-in charging socket i

4 X 3 Flexible Matrix Keypad Membrane Switch Keyboard USB Cable power indicator LED and anThis Matrix Keypad 3 X 4 has 12 buttons, arranged in a telephone line 3x4 grid. The keys are connected into a matrix,hence only 7 microcontroller pins (3 columns and 4 rows) are required to scan the pad. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 7 microcontroller pins (3 columns and 4 rows) to scan