--- title: NObreath | Help Centre description: Click for help and articles about the NObreath product --- [Skip to content](https://support.bedfont.com/en/knowledge/nobreath#main-content) English Show submenu for translations [Customer portal](https://support.bedfont.com/ticket-portal) ![Bedfont logo-high resolution png-2](https://support.bedfont.com/hs-fs/hubfs/Bedfont%20logo-high%20resolution%20png-2.webp?width=120&height=122&name=Bedfont%20logo-high%20resolution%20png-2.webp) - [Raise a Support Ticket](https://ticket.bedfont.com/) Open main navigation Close main navigation - [Raise a Support Ticket](https://ticket.bedfont.com/) - English Show submenu for translations - [Customer portal](https://support.bedfont.com/ticket-portal) - Go to www.bedfont.com Go to www.bedfont.com Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Help Centre](https://support.bedfont.com/en/knowledge) 2. [NObreath](https://support.bedfont.com/en/knowledge/nobreath) # NObreath Click for help and articles about the NObreath product ## FAQ - [How Environmentally Friendly Is My NObreath?](https://support.bedfont.com/en/knowledge/how-environmentally-friendly-is-my-nobreath) - [How Long Will The Battery Last On My NObreath?](https://support.bedfont.com/en/knowledge/how-long-will-the-battery-last-on-my-nobreath) - [Why Do I Have A Dock Station?](https://support.bedfont.com/en/knowledge/why-do-i-have-a-dock-station) - [What If My Patient Can’t Perform A Test?](https://support.bedfont.com/en/knowledge/what-if-my-patient-cant-perform-a-test) - [How Many Tests Can Be Performed?](https://support.bedfont.com/en/knowledge/how-many-tests-can-be-performed) - [How do I download FeNOchart?](https://support.bedfont.com/en/knowledge/how-do-i-download-fenochart) - [How do I clean the NObreath?](https://support.bedfont.com/en/knowledge/how-do-i-clean-the-nobreath) - [How Easy Is It To Take A Test?](https://support.bedfont.com/en/knowledge/how-easy-is-a-test) - [How Safe Is The NObreath Against COVID-19 And Other Viruses?](https://support.bedfont.com/en/knowledge/how-safe-is-the-nobreath-against-covid-19-and-other-viruses) - [How often should I change the mouthpiece?](https://support.bedfont.com/en/knowledge/how-often-should-i-change-the-mouthpiece) - [What can affect repeatability/reproducibility of readings on NObreath?](https://support.bedfont.com/en/knowledge/what-can-affect-repeatability/reproducibility-of-readings-on-nobreath) - [How do I update the NObreath Firmware?](https://support.bedfont.com/en/knowledge/how-do-i-update-the-nobreath-software) - [NObreath Driver Patch For FeNOchart](https://support.bedfont.com/en/knowledge/nobreath-driver-patch-for-fenochart) - [How do I set up the NObreath?](https://support.bedfont.com/en/knowledge/how-do-i-set-up-the-nobreath) - [How to take a test with the NObreath?](https://support.bedfont.com/en/knowledge/how-do-i-use-the-nobreath) - [What Can I Do With The FeNO Data I Have Collected?](https://support.bedfont.com/en/knowledge/what-can-i-do-with-the-feno-data-i-have-collected) - [How do I charge the NObreath?](https://support.bedfont.com/en/knowledge/how-do-i-charge-the-nobreath) - [Why Does My NObreath Rattle?](https://support.bedfont.com/en/knowledge/why-does-my-nobreath-rattle) See less ▼ ## On screen symbols - [Why does my screen say NObreath followed by numbers?](https://support.bedfont.com/en/knowledge/firmware-upgrade-for-the-nobreath) - [What does the warning screen with email and a phone mean?](https://support.bedfont.com/en/knowledge/contact-screen-is-showing-on-nobreath-device) - [Why is my NObreath device showing a red spanner?](https://support.bedfont.com/en/knowledge/service-must-be-performed-on-nobreath-device) - [Why is my NObreath device showing a yellow spanner?](https://support.bedfont.com/en/knowledge/service-date-has-expired-on-nobreath-device) - [Why is my NObreath showing a device attached to a gas cylinder?](https://support.bedfont.com/en/knowledge/service-calibration-reminder-for-nobreath) - [Why is my NObreath showing a purple spanner?](https://support.bedfont.com/en/knowledge/service-date-is-due-soon-on-nobreath-device) - [Why is my NObreath device showing a red warning sign?](https://support.bedfont.com/en/knowledge/no-sensor-detected-on-the-nobreath) - [Back Of The NObreath Device Is Open](https://support.bedfont.com/en/knowledge/back-of-the-nobreath-device-is-open) - [Red battery showing on my NObreath device](https://support.bedfont.com/en/knowledge/low-battery-on-nobreath-device) - [Why is my NObreath showing a red battery?](https://support.bedfont.com/en/knowledge/nobreath-device-needs-charging) See less ▼ ## Device function issues - [NObreath Device Will Not Switch On](https://support.bedfont.com/en/knowledge/nobreath-device-will-not-switch-on) - [My touch screen isn't working on the 1st generation NObreath](https://support.bedfont.com/en/knowledge/touch-screen-is-unresponsive-on-nobreath-device) - [I don't think my NObreath is reading correctly](https://support.bedfont.com/en/knowledge/nobreath-device-showing-incorrect-readings) - [My NObreath has reset the date and time?](https://support.bedfont.com/en/knowledge/time-and-date-reset-on-nobreath) - [The batteries have leaked inside my NObreath](https://support.bedfont.com/en/knowledge/battery-leak-in-nobreath) - [Why is there a rattling sound coming from inside my NObreath?](https://support.bedfont.com/en/knowledge/rattling-sound-inside-nobreath-device) - [NObreath Device Constantly Gives 0ppb](https://support.bedfont.com/en/knowledge/nobreath-device-constantly-gives-0ppb) - [I Exhaled Outside The Lines On My NObreath Device](https://support.bedfont.com/en/knowledge/i-exhaled-outside-the-lines-on-my-nobreath-device) - [Why will my NObreath not switch on after charging?](https://support.bedfont.com/en/knowledge/why-will-my-nobreath-not-switch-on-after-charging) See less ▼ ## Infection control - [NObreath Infection Control Maintenance Guidelines](https://support.bedfont.com/en/knowledge/nobreath-infection-control-guidelines) ## Safe Breath Testing During COVID-19 - [Reintroducing your NObreath® to services](https://support.bedfont.com/en/knowledge/reintroducing-your-nobreath-to-services) - [Coronavirus & the 2nd Generation NObreath® Update](https://support.bedfont.com/en/knowledge/coronavirus-the-2nd-generation-nobreath-update) ## Firmware - [NObreath - Latest Firmware Version](https://support.bedfont.com/en/knowledge/nobreath-latest-firmware-updates) - [NObreath](https://support.bedfont.com/en/knowledge/nobreath#main-content) - [FAQ](https://support.bedfont.com/en/knowledge/nobreath#faq) - [On screen symbols](https://support.bedfont.com/en/knowledge/nobreath#on-screen-symbols) - [Device function issues](https://support.bedfont.com/en/knowledge/nobreath#device-function-issues) - [Infection control](https://support.bedfont.com/en/knowledge/nobreath#infection-control) - [Safe Breath Testing During COVID-19](https://support.bedfont.com/en/knowledge/nobreath#safe-breath-testing-during-covid-19) - [Firmware](https://support.bedfont.com/en/knowledge/nobreath#firmware) - [Smokerlyzer](https://support.bedfont.com/en/knowledge/smokerlyzer#main-content) - [FAQ](https://support.bedfont.com/en/knowledge/smokerlyzer#faq) - [On screen symbols](https://support.bedfont.com/en/knowledge/smokerlyzer#on-screen-symbols) - [Device function issues](https://support.bedfont.com/en/knowledge/smokerlyzer#device-function-issues) - [Maintenance](https://support.bedfont.com/en/knowledge/smokerlyzer#maintenance) - [Infection control](https://support.bedfont.com/en/knowledge/smokerlyzer#infection-control) - [Safe Breath Testing During COVID-19](https://support.bedfont.com/en/knowledge/smokerlyzer#safe-breath-testing-during-covid-19) - [Firmware](https://support.bedfont.com/en/knowledge/smokerlyzer#firmware) - [Gastrolyzer](https://support.bedfont.com/en/knowledge/gastrolyzer#main-content) - [FAQ](https://support.bedfont.com/en/knowledge/gastrolyzer#faq) - [On screen symbols](https://support.bedfont.com/en/knowledge/gastrolyzer#on-screen-symbols) - [Device function issues](https://support.bedfont.com/en/knowledge/gastrolyzer#device-function-issues) - [Maintenance](https://support.bedfont.com/en/knowledge/gastrolyzer#maintenance) - [Infection control](https://support.bedfont.com/en/knowledge/gastrolyzer#infection-control) - [Firmware](https://support.bedfont.com/en/knowledge/gastrolyzer#firmware) - [Medi-Gas Check](https://support.bedfont.com/en/knowledge/medi-gas-check#main-content) - [FAQ](https://support.bedfont.com/en/knowledge/medi-gas-check#faq) - [ToxCO](https://support.bedfont.com/en/knowledge/toxco#main-content) - [On screen symbols](https://support.bedfont.com/en/knowledge/toxco#on-screen-symbols) - [Device function issues](https://support.bedfont.com/en/knowledge/toxco#device-function-issues) - [Maintenance](https://support.bedfont.com/en/knowledge/toxco#maintenance) - [Infection control](https://support.bedfont.com/en/knowledge/toxco#infection-control) - [FAQ](https://support.bedfont.com/en/knowledge/faq) [![Bedfont logo-high resolution png-2-1](https://support.bedfont.com/hs-fs/hubfs/Bedfont%20logo-high%20resolution%20png-2-1.webp?width=120&height=122&name=Bedfont%20logo-high%20resolution%20png-2-1.webp "Bedfont logo-high resolution png-2-1")](http://www.bedfont.com) Bedfont Scientific Ltd - Help Center Copyright © 2026, Bedfont Scientific Ltd.