Smart stackable power meter for efficient energy management with real-time monitoring and overload protection.
The SONOFF Smart Stackable Power Meter (SPM) is an advanced energy management solution designed to optimize your power usage efficiently. This smart system supports up to 128 channels by connecting to 32 SPM-4Relays, each capable of handling up to 20A. With real-time monitoring of current, voltage, and power through the eWeLink app, it offers comprehensive insights into your energy consumption. The SPM features microSD storage for over 20 years of data logging, providing detailed power usage reports and ensuring long-term data retention. Built-in overload protection automatically cuts off power during overloads to safeguard your devices, making it perfect for managing high-power equipment in a secure and organized manner.
Key Features
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Connects up to 32 SPM-4Relays
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20A per channel support
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Real-time power monitoring via eWeLink app
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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 |
| Color |
White |
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