The Si1102 Evaluation Kit (Si1102EK) is an additional tool from Silicon Labs. It offers infrared threshold detection where a visible LED illuminates when an object crosses an invisible threshold. The Si1102EK offers a configurable range where the proximity threshold range and scan rate is controlled by two thumb-wheel potentiometers. This evaluation kit is operated by a single coin-cell battery, no external power is required. Contents of the kit include the Si1102AB demo board and the Si1102EK Quick Start Guide.