3Wire WattCheck is a compact smart power meter designed to clip directly onto compatible MCBs or MCCBs, turning existing 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 helps homes, offices, small businesses, retail outlets and facility teams monitor selected circuits faster and more practically.
Many homes, offices and small facilities only monitor electricity at the main incoming supply. This gives total consumption, but it does not show which circuit, load, area, tenant or equipment is driving the energy use.
Conventional sub-metering may require DIN rail space, additional wiring, shutdown planning and higher installation cost. WattCheck is designed to reduce this barrier by fitting directly onto suitable protection or control devices and connecting through Wi-Fi to app-based monitoring.
WattCheck is best positioned as a retrofit-friendly smart power meter for circuit-level energy visibility in homes, offices, small businesses, retail outlets, small commercial sites and selected equipment monitoring points.
WattCheck is designed for fast circuit-level monitoring where users need practical visibility without installing a full conventional metering system.
Designed to be mounted on compatible protection or control devices, making retrofit monitoring easier.
Does not occupy DIN rail space, which helps when existing panels are already crowded.
Monitor energy data remotely using the Tuya App or Smart Life App without complex software setup.
Supports online monitoring and remote access for distributed sites, offices, shops and facilities.
Measures voltage, current, power, power factor and energy to understand circuit-level consumption.
Provides practical accuracy for energy awareness, circuit comparison and small-site monitoring.
Supports bi-directional energy metering for applications where import and export energy visibility is required.
Supports fault notifications and alarms to help users identify abnormal conditions faster.
Supports app-based scene automation for simple smart energy management use cases.
WattCheck integrates with Tuya and Smart Life apps, allowing users to view energy usage, voltage, current and power data from anywhere. This makes it practical for small sites, branch outlets, home offices, tenant areas and selected loads.
View circuit-level energy information through supported mobile apps.
Review usage trends and identify operating patterns.
Receive notifications and create basic scene automation actions.
WattCheck is available for single-phase and three-phase applications. Model selection should be based on system voltage, phase configuration, current rating, available panel space and installation arrangement.
| Model Type | Description | Current Rating | Typical Use |
|---|---|---|---|
| Single-Phase WattCheck | Direct fitting for 1P+N circuits. | Up to 63A | Home circuits, office loads, small commercial loads, air-conditioning and selected appliance circuits. |
| Three-Phase WattCheck | Direct fitting for 3P+N circuits. | Up to 63A | Three-phase sub-circuits, small equipment feeders and selected three-phase loads. |
| Three-Phase Split CT Option | Monitoring arrangement using split-core CTs for larger feeders. | Up to 200A, depending on model configuration | MCCB feeders, larger sub-circuits and retrofit applications where direct fitting is not suitable. |
| Parameter | Single-Phase Model | Three-Phase Model |
|---|---|---|
| Model Reference | 3W1110 | 3W3110 |
| Rated Working Voltage | 220-240V AC | 3N~220-240 / 380-415V AC |
| Frequency | 50 / 60Hz | 50 / 60Hz |
| Maximum Detection Current | 63A, 1P+N | 63A, 3P+N |
| Measured Parameters | Voltage, current, power factor and energy | Voltage, current, power factor and energy |
| Energy Measurement Accuracy | Class 1 / within practical ±1% tolerance | Class 1 / within practical ±1% tolerance |
| Overvoltage Category | Category III | Category III |
| Rated Insulation Voltage | 250V | 440V |
| Rated Withstand Impulse Voltage | 4kV | 4kV |
| Pollution Grade | 3 | 3 |
| Protection Grade | IP20 | IP20 |
| Communication Mode | Wi-Fi | Wi-Fi |
| Installation Type | Circuit breaker fitting | Circuit breaker fitting |
| Aperture | 9.8mm | 9.8mm |
| Dimensions | 46.8mm x 17.8mm x 21.3mm | 46.8mm x 52.8mm x 21.3mm |
Product suitability must be confirmed based on breaker type, panel layout, conductor size, voltage system, available access and local electrical safety requirements before installation.
Monitor selected circuits, air-conditioning loads, lighting circuits and high-usage appliances.
Improve visibility for office areas, equipment circuits, tenant loads and small distribution boards.
Suitable for shops, clinics, branches, outlets and small facilities needing fast energy visibility.
Track energy use of selected AC circuits and identify abnormal operating patterns.
Provide practical sub-circuit visibility where full metering systems are not justified.
Collect practical before / after energy data for improvement actions and simple energy awareness programmes.
| Use Case | Why WattCheck Helps |
|---|---|
| Panel Space Is Limited | Does not require DIN rail space, making it easier to deploy in compact distribution boards. |
| Fast Circuit Visibility Is Needed | Provides practical energy data without the complexity of a full conventional sub-metering system. |
| Remote App Monitoring Is Preferred | Uses Tuya / Smart Life app integration for simple access and monitoring. |
| Small Sites Need Energy Awareness | Supports homes, offices, retail outlets and small businesses that need simple energy visibility. |
| Selected Load Monitoring | Useful for monitoring air-conditioning, lighting, tenant loads, machines or critical circuits. |
WattCheck is part of Saturn Pyro’s 3Wire ecosystem of practical IIoT-enabled monitoring devices. It is designed for simple and fast energy visibility where a compact app-based solution is required.
For larger industrial and commercial sites that require advanced dashboards, EECA reports, digital energy audits, equipment analytics, WattSave savings tracking and long-term energy intelligence, Saturn Pyro can support wider integration through IoTWatt 4.0 and suitable metering / gateway architecture.
Use WattCheck for fast circuit-level visibility. Use IoTWatt 4.0 when the site requires enterprise-level energy dashboards, analytics, tickets, EECA reporting, digital energy audit evidence and verified savings management.
The following visual supports the WattCheck smart power meter, MCB / MCCB mounting and retrofit-friendly energy monitoring information above.
3Wire WattCheck smart power meter
Saturn Pyro supports 3Wire WattCheck smart power meters for homes, offices, small businesses, retail outlets, branch sites, selected equipment monitoring, circuit-level energy visibility and wider IoTWatt 4.0 energy intelligence projects in Malaysia.
Malaysia
