I have smart smoke and co detectors at home but didn’t manage to find gas detector that will work with Homey so i made one from two different devices
I want to share with you my new cheap natural gas leak detector for around 30 €
From Aliexpress i ordered this gas leak detector:
As i tested it detects quiqly natural gas and sound very loud with strobe lamp
It has 433mhz transmitter already inside but as we know Homey cannot learn 433Mhz signals and its also bad idea to use 433mhz as its not reliable.
That why i used Neo coolcam door sensor ( also xiaomi door sensor is perfect)
And combination with door sensor and flow that sends message and close gas valve