Xiaomi LYWSD03MMC Temperature/Humidity Monitor Holder

Here's a little holder for a Xiaomi LYWSD03MMC to fit inside your Filament Dry Box.

I use these sensors with ESPHome using the PVVX firmware and Home Assistant to monitor the humidity of my Dry Boxes.

https://esphome.io/components/sensor/xiaomi_ble.html?highlight=lywsd03mmc

Fix to the inside of your Dry Box with a couple of strips of double sided tape.