Signal Check is an automatic calibration process that ensures that the current sensors (CTs) on your monitor are installed correctly, and that your monitor is measuring current and voltage with the proper phase and signal polarity. This happens automatically after you've connected to your Wi-Fi network and logged into the Sense app.
During the course of the signal check, Sense may run into issues with phase or polarity that it can compensate. Sense is designed to identify these issues and automatically correct them with no intervention necessary. Please do not move or reverse your current sensors after installing them unless someone from the Sense support team asks you to.
In total, the signal check process can take up to 48 hours. Once it's complete, data will start to be captured and you'll see real-time energy usage data come into the app!