This is a mount for the Tuya 809wzt motion sensor.
Simply clip the two parts together, use a Tesa Powerstrip, Uhu Patafix, 3M Command Adhesive Strip or the original one provided in the box to attach the base to the wall and insert the sensor after 2 hours. Some superglue on the ball joint helps fix the position when tilted sharply.
The smart idea of ​​a ball joint attachment comes from here: https://www.thingiverse.com/thing:4760387
Tuya_Motion_809WZT_-_Mount.stl | 259.2KB | |
Tuya_Motion_809WZT_-_Mount_Base.stl | 219.4KB |