---
title: How do I calibrate my GR detector unit?
description: Manual calibration
---

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2. [GR Family](https://help.kromek.com/faqs/gr-family?hsLang=en)

# How do I calibrate my GR detector unit?

## Manual calibration

GR detectors do not self-calibrate but can be calibrated manually. It is recommended your GR detector be calibrated annually.

It is guaranteed that the device will be in calibration for the duration of the warranty period (12 months). If your product is out of warranty, there will be an investigation fee for our calibration services.

For calibration to be completed, your GR detector must be sent back to Kromek. To arrange this, get in touch with our service team by [submitting a service ticket on the Kromek Customer Portal.](https://help.kromek.com/customer-portal?hsLang=en) 

 

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