2 layers33.7 × 97.8 mm

HAN ESP TSS721
UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported
29 parts470
KiCad boards from 2 GitHub repositories tagged “dlms”, the most starred first; open any of them in PCBKit.

UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported

Tropaion/ZigBee_SmartMeter_Reader
This is a ZigBee device to collect data from smartmeters using the DLMS/COSEM protocol.

UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported