Any way to get alerted for low Petrol level for my petrol tank?

[siwilson (Simon)]

Maybe a relay and a dry contact sensor.

FAQ: List of devices with dry contact input from external sources

Hi, I’d like to document on this forum a list of devices which have the ability to accept input from other devices. I personally am thinking of buying a Motion sensor called a Dakota which can output when it detects motion via Dry Contacts. I know of some already to start us off: Ecolink Z-Wave Garage Door Tilt Sensor Schlage Rs100hc Z-wave Door & Window Sensor If you are ok with cutting off a water sensor and cabling, this seems pretty much the cheapest option I can find globally is the Tuya water leak sensor: https://m.aliexpress.com/item/1005004384160139.html (Credit for finding the Tuya goes to legend @Paul_Oliver )

The video shows an Arduino and I know there have been some projects here using those. ST_Anything was one but I don’t know if it is still going.