I built a fridge/freezer alarm, or will finish it when more sensors come from Amazon, but I have a hardware question and hope it might be tolerated as it is not exactly esphome specific.
I put them on the end of a cable with shrink wrap protecting the connectors but also some larger shrink wrap to protect the sensor. As in here:
But I realized I do not actually know what the sensors look like. Is cutting a hole on the front grate enough? What is the big flat metal plate on that back PCB? My impression is that PCB is just a convenience and all the sensors are inside the white plastic.
Bottom line question: Is wrapping it as shown going to impact its use or accuracy or more likely latency?
By the way - ESPHome remains one of the most impressive parts of Home Assistant. It’s just amazing how easily one can build functional wifi devices with OTA.
The sensor is under the white plastic grid. Blocking off the side vents will slow the airflow over the sensor and might slow down the reaction time slightly. But considering it is going to be inside a fridge with little air flow it probably won’t be that noticeable.
As for the back, my DHT22 sensor backs are potted in resin so I don’t see this. I guess it is exposed so you can thermally bond it to something either as a conduction sensor or to sink the self generated heat away.