IoTaWatt 120V Kit

From: $199.50

For 120V/240V split-phase service typically found in North America and Japan. The basic components will monitor whole house energy use.  Optional additional current-transformers can be added to monitor up to 12 additional circuits or circuit combinations.

Included Components:

  • IoTaWatt V5 Base Unit
  • USB Power Supply (120V)
  • AC Reference Transformer (120V)
  • Mains Current Transformers (2x200A default)

Optional Components:

  • Select alternate Mains CTs (price will be adjusted)
  • Add additional 100A Current Transformers (2 shown in product picture)
  • Add Additional 50A Current Transformers



The included basic components will monitor the power and energy used from the electricity grid and that you are billed for.  Add optional current transformers to monitor specific circuits and provide insight into the relative cost and usage patterns of various loads that contribute to that usage.

  • Solar inverter
  • EV charger
  • HVAC
  • Mini-split and other Heat Pumps
  • Water Heater
  • Well Pump
  • Clothes Dryer
  • Stove/Oven