Main Features: 1. When the module has detected a key pressed, the corresponding port will output a low-level signal 2. Independent button with large size 12mm x 12mm x 5mm, easy to use 3. The module comes with LED power indicator, it will light up after being powered on 4. Power supply voltage input range: DC 3 - 6V 5. Working temperature: -40 to 75 degrees Celsius 6. Mainly Compatible with: Arduino
