4*4 Matrix Keypad Keyboard Module Level indicator This high-torque standard servo now

This high-torque standard servo now comes in a metal-gear flavor for extra-high torque (13 kg-cm) and reliability

You can get fast - to save the data to a file in any FAT16 or FAT32 formatted SD card

Fingerprint image time: <1

11b/g/n WiFi Bluetooth N/A Bluetooth 4

Because it can read and write tags

4*4 Matrix Keypad Keyboard Module Level indicator This high-torque standard servo nowThe 4 x 4 matrix keypad usually is used as input in a project. It has 16 keys in total, which means the same input values. The 4 x 4 Matrix Keypad Module is a matrix non encoded keypad consisting of 16 keys in parallel. The keys of each row and column are connected through the pins outside pin R1 R4 as labeled beside control the rows, when L1 L4, the columns. A 44 matrix keypad consisting of microswitch buttons. The module has four holes 3mm (M3)