Tuya WiFi/ZigBee 3-Phase Bidirectional KWh Energy Meter | Modbus RTU
Tuya WiFi/ZigBee 3-Phase Bidirectional KWh Energy Meter | Modbus RTU
Tuya WiFi/ZigBee Three-Phase Bidirectional Energy KWh Meter with Modbus RTU Support
Take full control of your three-phase electrical system with this smart, bidirectional energy meter powered by the Tuya IoT platform. Whether you're managing a commercial facility, solar installation, or industrial setup, this advanced wattmeter delivers real-time monitoring, remote control, and comprehensive data logging — all accessible from your smartphone via WiFi or ZigBee connectivity.
Key Features
- Smart IoT Integration: Built on the Tuya Smart platform for automatic wireless networking, remote meter reading, and remote relay (pull-close) control from anywhere.
- Comprehensive Parameter Measurement: Simultaneously monitors voltage, current, active power, reactive power, apparent power, power factor, and phase angle across all three phases.
- Bidirectional Energy Tracking: Accurately measures both imported and exported energy — ideal for solar and renewable energy systems.
- Advanced Data Logging: Stores monthly electricity consumption statistics for the last 12 months and daily statistics for the last 31 days, plus demand tracking and bidirectional energy totals.
- Event & Relay History: Logs the last 50 relay operations and 10 SOE (Sequence of Events) records for full operational transparency.
- Built-in Relay with Prepaid Management: Integrated relay supports remote ON/OFF switching and prepaid energy management control.
- RS485 Bus Communication: Supports Modbus RTU (default) and DL/T645-2007 protocols with baud rates up to 9600 bps for seamless integration into existing BMS or SCADA systems.
- Adjustable Overcurrent Protection: Configurable overcurrent protection from 10A to 80A to suit a wide range of applications.
- Large Backlit LCD Display: White-backlit LCD with adjustable illumination time for easy on-site reading in any lighting condition.
- DIN Rail Mounting: Standard TH35-7.5 DIN rail mounting for quick, tool-friendly panel installation.
Technical Specifications
| Connectivity | WiFi / ZigBee (Tuya Smart) |
| Communication Interface | Two-wire RS485 |
| Supported Protocols | Modbus RTU (default), DL/T645-2007 |
| Baud Rate | 1200 / 2400 / 4800 / 9600 bps (default: 9600) |
| Overcurrent Protection | 10–80A (adjustable) |
| Dimensions (W×H×D) | 126 × 98 × 80 mm |
| Mounting | TH35-7.5 DIN Rail |
| Meter Case Material | UL 94 V-0 (flame retardant) |
| Operating Temperature | -25°C to +55°C |
| Storage Temperature | -40°C to +80°C |
| Humidity | <90%, non-condensing |
| Display | Large LCD with adjustable white backlight |
| Battery | Not required |
What's in the Box
- 1× Three-Phase Bidirectional Energy Meter
Made in Mainland China.
For further guidance on safe electrical metering installation practices, refer to the OSHA Electrical Safety Guidelines. For information on energy efficiency standards and smart metering, visit U.S. Department of Energy – Grid Modernization & Smart Grid.
Frequently Asked Questions
Q: Does this three-phase energy meter work with solar or net-metering systems?
A: Yes — the bidirectional (two-way) energy measurement capability makes this KWh meter ideal for solar installations and any net-metering application. It accurately tracks both energy consumed from the grid and energy exported back to it, providing a complete picture of your energy flow.
Q: What smart home or building management systems is this Tuya meter compatible with?
A: This meter integrates with the Tuya Smart IoT platform, which is compatible with Amazon Alexa, Google Home, and a wide range of Tuya-enabled apps and devices. For industrial or commercial BMS/SCADA integration, the RS485 interface with Modbus RTU and DL/T645-2007 protocol support enables seamless connectivity with most building management and automation systems.
Q: Can I control this energy meter remotely?
A: Absolutely. Via the Tuya Smart app over WiFi or ZigBee, you can remotely read meter data, switch the built-in relay ON or OFF, configure prepaid energy management, and review historical consumption statistics — all from your smartphone, wherever you are.
Q: What is the maximum current this meter can handle, and is overcurrent protection adjustable?
A: The meter supports an adjustable overcurrent protection range of 10A to 80A, allowing you to set the threshold appropriate for your specific load. The built-in relay will activate based on your configured protection settings to help safeguard your connected equipment.