The SONOFF Smart Stackable Power Meter (SPM) is an advanced energy monitoring device designed for real-time power consumption tracking, overload protection, and smart energy management. Whether you're managing rental properties, commercial buildings, or high-power appliances, this power meter offers reliable monitoring with local storage and remote access via the eWeLink App.
Key Features:
✅ Smart Power Metering & Energy Statistics – Track real-time power usage and analyze historical energy consumption via the eWeLink app.
✅ Overload Protection – Prevents appliances from overheating or short-circuiting, ensuring safe power management at all times.
✅ Supports High-Power Loads – Each channel supports up to 20A, making it perfect for heavy-duty appliances, including industrial machines, mining rigs, and high-power electronics.
✅ Expandable System with RS-485 Communication – One SPM-Main can control up to 32 SPM-4Relays, allowing for a total of 128 isolated power channels.
✅ Micro SD Card Data Storage – Store and retrieve up to 180 days of energy usage data using an 8GB-32GB SD card.
✅ Remote Monitoring via eWeLink App – Access live energy statistics, power logs, and device settings from anywhere with Wi-Fi or Ethernet connectivity.
✅ DIN Rail Mounting for Easy Installation – Securely mount the power meter with a clean and professional setup.
Specifications:
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Model: SONOFF SPM Smart Stackable Power Meter
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Modules: SPM-4Relay
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SPM-4Relay:
- Voltage: 100-240V, 50/60Hz
- Max Load Per Channel: 20A
- Total Max Load: 80A
- Dimensions: 250 x 90 x 66.5mm
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Material: PC V0 flame-retardant shell
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Communication Method: Wi-Fi & RS-485
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Compatibility: Works with all smart home systems & eWeLink App
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Certifications: CE, FCC
