Cylindrical Case for 5x7cm Perfboard with Screw Cap

A 50x70mm perfboard slides in perfectly so no screws are needed to keep it in place. There's also a hole for a usb cable in the back.

[Here is the project i used it for (ESP8266-Based Air-Quality & Temperature-Humidity Sensor).](https://blog.panosmazarakis.com/2018/07/22/esp8266-air-quality-temperature-humidity-sensor/)