Printed with 2 shells and 15% infill. All components fit easily on a Rep2 printerbed. The complete model can't be printed due to the lay-out on the printer bed (provided as reference ;-), please use the single STL's provided.
If you want the antenna to stick out, make a 1mm hole in the top (see picture), depending on the frequency of the RF module chosen, this might not be necessary (the item in the picture is 433Mc: long antenna ;-)
A low power wireless energy monitoring node. It's designed to sense data from multiple CT current sensors, optically from a pulse-output utility meter and from multiple one-wire temperature sensors. It can be powered by 2 x AA batteries or 5V USB.