#Specification GTEM-1

GTEM v1  Energy Monitoring board main features (Provisional):

  • Espressif ESP32 WROOM 32
    • 2.4GHz Wi-Fi and Bluetooth LE MCU module, with dual core CPU
  • ATM90E26 (Energy Monitor)
    • Metering features fully in compliance with the requirements of IEC62052-11, IEC62053-21 and IEC62053-23
    • Active Energy LED / Input to ESP32
    • Reactive Energy LED / Input to ESP32
  • AT24C64 EEPROM
    • For storing parameters, calibration data, Logs etc.
  • OLED I2C Connector
  • Current Clamp Input
  • AC Low Voltage Input
    • Power safely derived from a SELV / Wall AC/AC Power Supply
    • On-board 3V3 DC Power Supply
    • Micro USB.  Uses the popular CH340 for ease of developing code, flashing and debugging
    • Arduino D1 Flashing and Programming Compatibility
    • No drivers normally needed
  • OPTO Input
    • Meter Pulse Opto Reader
  • On-board Temperature Sensor
    • NTC (range -40ºC to +125ºC)
  • Reset Button
  • User GPIO
  • User Programmable Button
  • RGB LED (ESP software code / firmware controlled)
  • DC Power LED (red)
  • PCB designed to fit into an BMC enclosure (available separately)
    • Also allows for the display to be included, or not (available separately)
    • PCB Size 65mm x 53m

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