---
title: Why is my NObreath device showing a yellow spanner?
description: Service Date Has Expired On NObreath Device
---

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1. [Help Centre](https://support.bedfont.com/en/knowledge?hsLang=en)
2. [NObreath](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en)
3. [On screen symbols](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#on-screen-symbols)

# Why is my NObreath device showing a yellow spanner?

## Service Date Has Expired On NObreath Device

![expired](https://support.bedfont.com/hs-fs/hubfs/expired.png?width=300&name=expired.png)This symbol means that the service date has exceeded 365 days. This will be displayed every day until 395 days has been surpassed or it has been reset by performing a calibration or changing the sensor. To change the sensor, you should consider our Sensor Exchange Request, read more about that [here](https://www.bedfont-distributor.com/sensor-exchange-request/).

If a service is not due, this could be because the time or date may have been changed to a date in the past. To correct this, change the date or time to the current date or time.

 If the problem persists or has not been resolved by the information provided above, please contact your local distributor for more advice. Find out who your local distributor is from our website [here](https://www.bedfont.com/find-my-distributor). 

- [NObreath](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#faq)
    - [On screen symbols](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#device-function-issues)
    - [Infection control](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#infection-control)
    - [Safe Breath Testing During COVID-19](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#safe-breath-testing-during-covid-19)
    - [Firmware](https://support.bedfont.com/en/knowledge/nobreath?hsLang=en#firmware)
- [Smokerlyzer](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#faq)
    - [On screen symbols](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#device-function-issues)
    - [Maintenance](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#maintenance)
    - [Infection control](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#infection-control)
    - [Safe Breath Testing During COVID-19](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#safe-breath-testing-during-covid-19)
    - [Firmware](https://support.bedfont.com/en/knowledge/smokerlyzer?hsLang=en#firmware)
- [Gastrolyzer](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#faq)
    - [On screen symbols](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#device-function-issues)
    - [Maintenance](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#maintenance)
    - [Infection control](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#infection-control)
    - [Firmware](https://support.bedfont.com/en/knowledge/gastrolyzer?hsLang=en#firmware)
- [Medi-Gas Check](https://support.bedfont.com/en/knowledge/medi-gas-check?hsLang=en#main-content)

    - [FAQ](https://support.bedfont.com/en/knowledge/medi-gas-check?hsLang=en#faq)
- [ToxCO](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#main-content)

    - [On screen symbols](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#on-screen-symbols)
    - [Device function issues](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#device-function-issues)
    - [Maintenance](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#maintenance)
    - [Infection control](https://support.bedfont.com/en/knowledge/toxco?hsLang=en#infection-control)
- [FAQ](https://support.bedfont.com/en/knowledge/faq?hsLang=en)

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