DX DealeXtreme
Module parameter: 1. Single module can drive a 8x8 common matrix; 2. Module working voltage: 5V; 3. Module size: 3.2 cm x 3.2 cm x 1.3 cm; 4. With 4 fixed screw holes�� aperture 3mm; 5. module with input and output interface�� support for multiple modules; Great for Arduino projects DIY.