Use this high grade professional PVC to Blumat System adapter to go from your threaded 1/2" or 1/4" PVC pipe into a 3mm Blumat sensor.
This includes a professional quick connect stop, makes it easy to disconnect from the system without interrupting the water line. The blue fittings has a valve on the inside, that once disconnected to the white fittings, cause a plug to stop water flow.
Convert your already existing irrigation system, into a smart Blumat automatic watering Blumat system. Only water your plants, when your plants want to be watered!
*2nd picture shows basically what it would look like, except to 3mm. Also white 1/2" male NPT adapter not included but can be purchased separately.