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Energy harvesting wireless sensor harvi is an essential part of the installation process if you want to save time and money. It has many great qualities including the elimination of unsightly wiring around the home & prevents the need to lift up floor boards or disrupt home decor.This intelligent device enables the myenergi product family to be installed without using a hardwired current transformer.


harvi is a clever little device that enables the zappi and eddi products to be installed without using a wired current transformer (CT) for measuring the grid and or generation power; instead the CT is connected to harvi. No power source is needed for harvi – the energy from the CT is harvested and used to transmit the measurement signal to the zappi or eddi. This means batteries or electrical wiring are eliminated!


  • IMPORTANT: Will only work with V2+ Zappi
  • Zappis cater to a maximum of 3 CTs hardwired directly, harvi will be needed if no of CTs exceeds this for a single installation.
  • 3 year warranty covered



CT Inputs         3 inputs enable 3-phase or multi-point power measurement
Measurement Range    25W to 15kW (50Hz AC, import and export)
Energy Harvesting Range    0.2A to 65A (including reactive current)
Accuracy                      2.5% typical
Transmission Rate    1s @ 1A+, <10s @ 0.5-1A, <30s @ <0.5A
Wireless Interface    915 MHz (proprietary protocol)
Mounting Location    Indoor only (can be housed in an IP rated plastic box if required)
Operating Temperature    -30°C to +50°C
Dimensions        98 x 98 x 36

signal range from harvi to zappi: 10-20m

myenergi harvi

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