Main Features
· Dimension: 86 mm × 86 mm × 37 mm
· Installation: Screw-in Bracket or Din-rail Bracket
· CT Clamp Available at: 80A, 120A, 200A, 300A, 500A, 750A
· External Antenna(Optional)
· Compatible with Three-Phase, Split-Phase, and Single-Phase System
· Measures real-time voltage, current, frequency, power factor, active power, and total energy consumption.
· Support Bi-directional Energy Measurement (Energy Usage/Solar Power Production)
· Tuya compatible with Tap-to-Run, automation, OTA updates, or MQTT API integration for third-party energy platforms.
Why Zigbee2MQTT Users Choose PC321
The PC321 ZigBee energy meter is designed for users who require flexible local energy monitoring and integration with Zigbee2MQTT-based automation systems. It provides real-time voltage, current, active power, and energy data for single-phase, split-phase, and 3-phase electrical systems.
With support for ZigBee 3.0 communication and multiple CT clamp options from 80A to 500A, the PC321 is suitable for smart energy monitoring, solar applications, and advanced IoT energy projects.
Applications
• Whole-home energy monitoring
• Solar PV energy monitoring
• Split-phase and three-phase power monitoring
• EV charger energy monitoring for residential and commercial installations
• HVAC, heat pump, and high-load equipment energy monitoring
• Zigbee2MQTT and Home Assistant energy integration
• Smart building and BMS energy management
• Residential and commercial sub-metering
• IoT-based energy monitoring systems
FAQ
Q1: Is the PC321 compatible with Zigbee2MQTT?
Yes. The PC321 supports Zigbee2MQTT integration for advanced smart energy monitoring and automation projects.
Q2: What electrical systems does the PC321 support?
The PC321 supports single-phase, split-phase, and 3-phase electrical systems for residential and commercial applications.
Q3: Does it support solar energy monitoring?
Yes. The PC321 supports bi-directional energy monitoring for both energy consumption and solar energy production.
Q4: What CT clamp options are available?
The PC321 supports multiple CT clamp options, including 80A, 120A, 200A, 300A, and 500A models.
Q5: Is the PC321 available in both Tuya and MQTT versions?
Yes. The PC321 is available in both Tuya-compatible and MQTT versions, allowing users to choose cloud-based deployment or local platform integration according to project requirements.
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Wireless Connectivity
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ZigBee
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• 2.4GHz IEEE 802.15.4
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ZigBee Profile
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• ZigBee 3.0
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RF Characteristics
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• Operating frequency: 2.4GHz
• Range outdoor/indoor: 100m / 30m
• Output Power: Up to +19dBm
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Antenna
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• Internal Antenna (default)
• External Antenna (optional)
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Physical Specifications
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Operating Voltage
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• 100~240 Vac 50/60 Hz
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Power consumption
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• < 1W
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Calibrated Metering Accuracy
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• ≤ 100W Within ±2W
• >100W Within ±2%
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Reporting Cycle
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• Minimum:10s (Power change≥ 1%)
• Maximum:1min (Power change < 1%)
Note: It’s available to set the threshold
percentage on the App
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Data storage
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• 3 years on server
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Clamp diameter
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• 80A (default): 10mm
• 120A (optional): 16mm
• 200A (optional): 20mm
• 300A (optional): 24mm
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Electrical parameters measured
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• Irms, Vrms, Active Power & Energy,
Reactive Power & Energy
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Work with gateway
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• SEG-X1: Support up to 20 pcs of PC321
• SEG-X3: Support up to 10 pcs of PC321
Note: The values are for reference only
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Operating environment
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•Temperature:-20 ℃ ~+55 ℃
•Humidity: ≤ 90% non-condensing
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Dimension
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• 86(L) x 86(W) x 37(H) mm
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Weight
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• 415g
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