Efficiently manage power with SONOFF's stackable power meter, supporting real-time monitoring and overload protection.
The SONOFF Smart Stackable Power Meter (SPM) is an innovative solution designed to efficiently monitor and manage power consumption across multiple devices. This versatile system can connect up to 32 SPM-4Relays, each with 4 isolated channels, allowing for organized and scalable device control. Each channel supports up to 20A, making it ideal for high-power devices. The SPM offers real-time monitoring of current, voltage, and power through the eWeLink app, ensuring smarter energy management. With microSD storage capable of logging over 20 years of data and built-in overload protection, the SONOFF SPM is perfect for secure, long-term energy management.
Key Features
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Supports up to 32 SPM-4Relays
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20A per channel capacity
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Real-time current, voltage, and power monitoring
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Overload protection
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MicroSD storage for long-term data logging
Technical Specifications
| Specification |
Value |
| Model |
SPM |
| Wi-Fi |
802.11 b/g/n 2.4GHz |
| Micro SD card storage range |
8GB-32GB |
| SPM-4Relay Input |
100-240V~ 50/60Hz 20A/Gang 80A/Total Max |
| SPM-4Relay Output |
100-240V~ 50/60Hz 20A/Gang 80A/Total Max |
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