Overview: This document describes the specification of the PZEM-004T AC communication module. The module is designed for measuring AC voltage, current, active power, frequency, power factor, and active energy. It does not include a display; data is read via the TTL interface. PZEM-004T-10A: Measuring Range 10A (Built-in Shunt) Function 1.1 Voltage 1.1.1 Measuring range: 80–260 V 1.1.2 Resolution: 0.1 V 1.1.3 Measurement accuracy: ±0.5% 1.2 Current 1.2.1 Measuring range: 0–10 A (PZEM-004T-10A) 1.2.2 Starting measurement current: 0.01 A (PZEM-004T-10A) 1.2.3 Resolution: 0.001 A 1.2.4 Measurement accuracy: ±0.5% 1.3 Active Power 1.3.1 Measuring range: 0–2.3 kW (PZEM-004T-10A) 1.3.2 Starting measurement power: 0.4 W 1.3.3 Resolution: 0.1 W 1.3.4 Display format: – Below 1000 W: one decimal place (e.g., 999.9 W) – 1000 W or above: integer only (e.g., 1000 W) 1.3.5 Measurement accuracy: ±0.5% 1.4 Power Factor 1.4.1 Measuring range: 0.00–1.00 1.4.2 Resolution: 0.01 1.4.3 Measurement accuracy: ±1% 1.5 Frequency 1.5.1 Measuring range: 45–65 Hz 1.5.2 Resolution: 0.1 Hz 1.5.3 Measurement accuracy: ±0.5% Material: Plastic Color: Light blue Package Contents: 1 × Digital Multifunction Meter Note: The package includes only the item listed above. Other accessories or products are not included. Color appearance may vary slightly due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.