A: Yes, it uses a shunt resistor (Class 1 accuracy, +/- 1%). It is accurate enough for billing estimation but not for revenue-grade metering.
A: Mostly yes. The interface, wiring, and app are identical. The only difference is the amperage rating (60A vs 63A vs 40A). The "EC" WiFi feature is the same.
A: If the brand website doesn't host it, refer to this guide. Alternatively, search "Tuya Smart 2P WiFi Breaker Manual" – the internal hardware is standardized. However, verify your voltage settings (220V vs 110V). The TOVPD1-60-EC is typically for 220-240V systems (EU, UK, Asia, Australia). A 110V version exists but has different part numbers.
