CO2 notification spam when over 1500 ppm

[RogerSik]

Currenlty i have following setup with node-red + home-assistant

If CO2 Sensor is over 1500 ppm, then send me notification to smartphone.

It works. But example my CO2 ppm is up to 1800. It takes sometime to get down under 1500 ppm and i wil be spammed in 5 to 10 minutes for example

• 1800 ppm (first notfiy)
• 1750 ppm
• 1700 ppm
• 1600 ppm
• etc

Is there a way to mute the notification for x minutes or only send new notifcations when going up or maybe there is a better idea?

[E1cid]

Hi and welcome.
I would set a boolean property in the msg, then use that to filter messages with the filter/rbe node.
so when over 1500 msg.pass would be true, then filter node will allow msg to pass once until msg.pass became false.
e.g.

[{"id":"1d88c4fe.66b62b","type":"inject","z":"b779de97.b1b46","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"1000","payloadType":"num","x":220,"y":4020,"wires":[["779122e.80aca5c"]]},{"id":"779122e.80aca5c","type":"change","z":"b779de97.b1b46","name":"","rules":[{"t":"set","p":"pass","pt":"msg","to":"$$.payload > 1500","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":410,"y":4020,"wires":[["76a0a2c8.3a55fc"]]},{"id":"96b6e747.44ec1","type":"inject","z":"b779de97.b1b46","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"2000","payloadType":"num","x":230,"y":4060,"wires":[["779122e.80aca5c"]]},{"id":"76a0a2c8.3a55fc","type":"rbe","z":"b779de97.b1b46","name":"","func":"rbe","gap":"","start":"","inout":"out","septopics":true,"property":"pass","x":590,"y":4020,"wires":[["d147b3bb.224868"]]},{"id":"d147b3bb.224868","type":"debug","z":"b779de97.b1b46","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":730,"y":4000,"wires":[]}]

[TotallyInformation]

Those seem very high co2 levels - certainly not especially healthy ones.