New Documentation Available

New documentation is now available at https://iotawatt.readthedocs.io

CT Six-Pack

Add six ECS1050 CTs and get 25% off all six at checkout.  Discounted international flat-rate shipping available at checkout.

Please Exercise Caution

IoTaWatt is a low-voltage device and has been tested to conform to established safety standards.  Nevertheless, it is used to measure high-voltage electric circuits. Installation of the passive current-transformers that are used to do this can involve a serious, potentially fatal shock hazard.  There are no shortcuts to safety.  Installation of current transformers inside electrical equipment, or anyplace that exposed high-voltage wiring may be present, should be performed by a qualified electrician.  Any instruction or guidance as to installation, placement, or configuration of the current transformers is intended to inform a qualified installer.