Enclosure for a NodeMCU ESP8266 board. Allows space for connections onto the male header, with a small cable exit. Also allows access to the USB port.
Use two short M2.5 countersunk screws to hold the lid in place. This also clamps the board in place.
Cable exit is 5x2.3mm - suitable for a 4-core flat cable (like telephone cable).
The author hasn't provided the model origin yet.