topic Re: My Nest CO2/smoke alarm emits a high frequency chirping sound intermittently. Started today. in Nest Protect https://www.googlenestcommunity.com/t5/Nest-Protect/My-Nest-CO2-smoke-alarm-emits-a-high-frequency-chirping-sound/m-p/2267#M51 <DIV>Hi Hank Messick,</DIV><DIV>&nbsp;</DIV><DIV>I've linked a help centre&nbsp;article below that explains what the sound means and what to do.</DIV><DIV>&nbsp;</DIV><DIV><STRONG><A href="https://support.google.com/googlenest/answer/9243107" target="_blank" rel="nofollow noopener">Nest Protect lights and sounds - Google Nest Help</A></STRONG></DIV><DIV>&nbsp;</DIV><DIV><EM>-From david.king, Gold Product Expert.</EM><STRONG><BR /></STRONG></DIV> Mon, 30 Aug 2021 17:43:44 GMT rgaila 2021-08-30T17:43:44Z My Nest CO2/smoke alarm emits a high frequency chirping sound intermittently. Started today. https://www.googlenestcommunity.com/t5/Nest-Protect/My-Nest-CO2-smoke-alarm-emits-a-high-frequency-chirping-sound/m-p/2266#M50 <P>Disclaimer: This <A href="https://support.google.com/googlenest/thread/121173605/my-nest-co2-smoke-alarm-emits-a-high-frequency-chirping-sound-intermittently-started-today" target="_self">thread</A> was migrated from our previous version of the Google Nest Community. You can continue to receive updates on your thread issue here or simply ask, browse or more in the new Google Nest Community.</P><P data-unlink="true">Original Poster:&nbsp;<STRONG>Hank Messick&nbsp;</STRONG></P><DIV class="thread-question__payload">After many months of perfect operation our CO2/smoke alarm is making high frequency chirping sounds intermittently.</DIV><DIV class="thread-question__details">&nbsp;</DIV> Mon, 30 Aug 2021 17:43:24 GMT https://www.googlenestcommunity.com/t5/Nest-Protect/My-Nest-CO2-smoke-alarm-emits-a-high-frequency-chirping-sound/m-p/2266#M50 rgaila 2021-08-30T17:43:24Z Re: My Nest CO2/smoke alarm emits a high frequency chirping sound intermittently. Started today. https://www.googlenestcommunity.com/t5/Nest-Protect/My-Nest-CO2-smoke-alarm-emits-a-high-frequency-chirping-sound/m-p/2267#M51 <DIV>Hi Hank Messick,</DIV><DIV>&nbsp;</DIV><DIV>I've linked a help centre&nbsp;article below that explains what the sound means and what to do.</DIV><DIV>&nbsp;</DIV><DIV><STRONG><A href="https://support.google.com/googlenest/answer/9243107" target="_blank" rel="nofollow noopener">Nest Protect lights and sounds - Google Nest Help</A></STRONG></DIV><DIV>&nbsp;</DIV><DIV><EM>-From david.king, Gold Product Expert.</EM><STRONG><BR /></STRONG></DIV> Mon, 30 Aug 2021 17:43:44 GMT https://www.googlenestcommunity.com/t5/Nest-Protect/My-Nest-CO2-smoke-alarm-emits-a-high-frequency-chirping-sound/m-p/2267#M51 rgaila 2021-08-30T17:43:44Z