Open/Closed Sensor with EXTERNAL temperature probe

[dadarkgtprince]

@arlomiller

Or would I be building an arduino for every door/compartment

single arduino, and multiple sensors (essentially one per pin). you can get something like the nodeMCU and integrate it into HE using [Release] HubDuino v1.1.9 - Hubitat to Arduino / ESP8266 / ESP32 / ThingShield Integration (ST_Anything)