# 6.3 Digital Input

With WCC Lite hardware version 1.4, a digital input functionality has been introduced. Software configuration guidelines are discussed in the [WCC Lite internal signals section.](https://wiki.elseta.com/books/manual/page/19-wcc-lite-internal-signals) It changes state when the voltage is between 12-48V (The supported range is between 10-60V).

<table border="1" id="bkmrk-input-voltage-12-48-" style="border-collapse: collapse; width: 100%; height: 119.188px;"><tbody><tr style="height: 29.7969px;"><td style="width: 49.9383%; height: 29.7969px;">Input voltage</td><td style="width: 49.9383%; height: 29.7969px;">12-48 VDC (accepts 10-60V)</td></tr><tr style="height: 29.7969px;"><td style="width: 49.9383%; height: 29.7969px;">Protection</td><td style="width: 49.9383%; height: 29.7969px;">±60 VDC reverse polarity protection

Isolated from main logic

</td></tr></tbody></table>

[![image-1669194223199.png](https://wiki.elseta.com/uploads/images/gallery/2022-11/scaled-1680-/image-1669194223199.png)](https://wiki.elseta.com/uploads/images/gallery/2022-11/image-1669194223199.png)

<span style="color: #e03e2d;">Figure 11: Signal relay connector </span>