Meross Smart Energy Consumption Monitor

This monitor supports single-phase, single-split, and three-phase systems with easy clamp-on installation. It tracks power, voltage, current, and power factor with ±2% accuracy, storing up to 5 years of data. Price drops from $249.99 to $189.99 to $159.99 when you clip the $30 off coupon on-page. Shipping is free.