Proximity 11 Click Mikroe Proximity 11 Click is a close-range proximity sensing board with the RPR-0521RS Ambient Light Sensor with IrLED. The sensor allows for an accurate proximity detection at a maximum distance of 100mm. The proprietary LED current driving technique eliminates the need for calibration. A huge dynamic range allows ambient light sensing response of visible and infrared light in various conditions. An extensive interrupt engine allows for firmware optimization.