Small casing for Wemos D1 mini v3 (ESP8266) with an RS485 to TTL Module.
Used for Communication between Smartmeter and MQTT Broker via Tasmota.
Wemos is mounted with 2 pcs 2x10mm Self Taping screws,
RS485 to TTL module and the lid is only mounted by "Snap In"
printed with ABS+
0.2mm Layerheight
40% Infill
The author hasn't provided the model origin yet.