---
title: How do I set the D3S ID to Bluetooth® pairing mode?
description: Look for the purple light
---

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1. [FAQs](https://help.kromek.com/faqs?hsLang=en)
2. [D3S ID](https://help.kromek.com/faqs/d3s-id?hsLang=en)

# How do I set the D3S ID to Bluetooth® pairing mode?

## Look for the purple light

First ensure that the D3S detector is switched off. The, press and hold the D3S button until the device turns on. Keep the button pressed until the LED turns purple, as this indicates that the device is in  Bluetooth® pairing mode.

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