3Wire WattCheck is a compact smart power meter designed to sit directly on top of existing MCBs or MCCBs, turning electrical panels into smart energy monitoring points with very low installation friction.
No DIN rail space required. No major cable modification. No complicated rewiring. WattCheck makes circuit-level energy monitoring faster, easier and more practical for new and retrofit installations.
With built-in Wi-Fi and Tuya / Smart Life app integration, WattCheck allows users to monitor energy usage, voltage, current and power in real time from anywhere.
Many facilities still monitor electricity only at the main incomer level. This gives a total energy number, but it does not show which circuit, area, tenant or equipment is consuming more energy than expected.
Installing conventional sub-meters can involve panel space limitations, DIN rail requirements, wiring changes, shutdown planning and higher installation cost.
It is suitable for practical monitoring of:
WattCheck clips directly onto protection or control devices and can be mounted on the top or bottom of compatible MCBs or MCCBs.
The compact design does not occupy DIN rail space, making it easier to install in panels where space is already limited.
Designed to reduce installation friction by avoiding major cable or wiring modification in suitable applications.
Monitor energy data remotely through Tuya and Smart Life apps for simple online visibility without complex software setup.
Built-in Wi-Fi enables seamless online monitoring and remote access for distributed sites, offices, shops and facilities.
Measure voltage, current, power and energy in real time to understand circuit-level consumption behaviour.
Provides high accuracy energy monitoring with ±1% tolerance for dependable energy visibility.
Supports bi-directional energy metering, making it suitable for modern smart energy applications.
Supports fault notifications and alarms to help users detect issues early and respond faster.
WattCheck integrates with the Tuya App and Smart Life App, allowing users to access data, monitor electrical parameters and manage energy usage remotely.
Through app-based monitoring, users can view energy statistics, analyse real-time charts, receive notifications and support smarter energy decisions across single or multiple locations.
WattCheck is available for single-phase and three-phase systems, including direct-mount and split CT options.
| Model Type | Description | Current Rating | Typical Use |
|---|---|---|---|
| 1P Single Phase | Direct mount for MCBs | Up to 63A | Single-phase circuits, small loads, office or retail circuits |
| 3P Three Phase | Direct mount for 3-phase MCBs | Up to 63A | Three-phase sub-circuits and equipment monitoring |
| 3P with Split CT | MCCB mount using split-core CTs | Up to 200A | Larger feeders, MCCB circuits and retrofit applications |
Monitor selected home circuits, air-conditioning loads, lighting circuits and other high-usage electrical points.
Improve circuit-level energy visibility for offices, commercial spaces, common areas and selected building loads.
Support power visibility for PDU-level or selected electrical circuit monitoring applications.
Use WattCheck to collect practical energy data before and after improvement actions.
Monitor distributed sites using built-in Wi-Fi and app-based access without complex monitoring infrastructure.
Suitable for outlets, branches, shops, clinics, offices and small facilities that need fast energy visibility.
Reduces wiring work, panel modification and installation complexity in suitable applications.
Compact mounting and reduced wiring work help lower the cost of expanding energy monitoring points.
Understand energy usage at a more practical level instead of relying only on main incomer readings.
Identify unusual consumption, abnormal current or unexpected operating behaviour earlier.
Use the Tuya or Smart Life app to monitor energy usage anytime and anywhere.
Ideal for existing panels and retrofit installations where conventional metering is difficult or costly.
Supports scene automation for smarter energy management and notification-based response.
Suitable for homes, buildings, branches, small businesses and distributed monitoring systems.
3Wire WattCheck is part of Saturn Pyro’s growing ecosystem of IIoT-enabled solutions, designed to help users manage energy smarter, reduce waste and support sustainability goals with plug-and-play simplicity.
For sites that require advanced energy analytics, WattCheck can also support wider digital energy monitoring strategies together with IoTWatt 4.0, selected gateways and other metering solutions.
The 3Wire WattCheck Power Meter is a compact, Wi-Fi enabled smart power meter that clips directly onto existing MCBs or MCCBs for fast, practical and cost-effective energy monitoring.
With Tuya / Smart Life app integration, real-time monitoring, ±1% accuracy, single-phase and three-phase options, and retrofit-friendly installation, WattCheck makes circuit-level energy intelligence easier to deploy.
Contact 3Wire / Saturn Pyro for WattCheck model selection, installation support and energy monitoring applications.
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