Sap – AC Measurement Expansion PCB

Sap is a compact, non-invasive AC current measurement module designed for safe and accurate power monitoring in smart home and IoT projects. Built to work with Current Transformer (CT) sensors, Sap allows you to monitor the power consumption of appliances like heaters, washing machines, or HVAC units—without modifying high-voltage wiring.

Designed for seamless integration with the Sprig ESP32-C3 Development Board and the SprigStack ecosystem, Sap is fully compatible with ESPHome and Home Assistant, enabling real-time energy tracking and automation triggers.

Perfect for anyone building an energy-aware smart home, Sap helps you track usage, reduce waste, and take control of your power consumption—one watt at a time.

⚡ Measure smarter with Sap.