A magnetic holder for Third Reality Zigbee sensors. I needed a way to mount the temperature and humidity sensor and the vibration sensors around the house for my Home Assistant automation. It uses 6x3 disc magnets that can be press fit or glued in. You can use a pair of pliers to help push the magnet in if needed. 

The top is open to easily slide out the sensor for battery changes, and to not cover the speaker on the vibration sensor or ambient air vent on the temperature sensor. There is also window in the front to show which sensor is installed. 

I printed in eSun PLA+ with no supports on my Bambu A1 in the default Standard Profile in Orca Slicer with the model standing upright.