Product Description
The SONOFF Smart Stackable Power Meter (SPM) is a powerful tool for tracking and managing your energy use. It monitors power consumption in real time, protects against overloads, and gives you smart control over your electricity. It's a great fit for rental properties, commercial buildings, and high-power appliances. You get reliable monitoring with both local storage and remote access through the eWeLink app.
The SPM makes energy tracking simple. It records your real-time power usage and saves historical data, so you can review consumption trends right from the app. Built-in overload protection keeps your appliances safe by preventing overheating and short circuits. Each channel handles up to 20A, which makes it ideal for heavy-duty equipment like industrial machines, mining rigs, and high-power electronics.
Need to monitor more? The system is fully expandable. Using RS-485 communication, one SPM-Main can control up to 32 SPM-4Relay units, giving you a total of 128 isolated power channels. A microSD card (8GB to 32GB) stores up to 180 days of energy data for easy review. And with Wi-Fi or Ethernet, you can check live stats, power logs, and settings from anywhere.
Installation is clean and straightforward thanks to DIN rail mounting for a professional setup. The durable PC V0 flame-retardant shell is built for safety and long-term use.
Key specifications:
- Model: SONOFF SPM Smart Stackable Power Meter
- Module: SPM-4Relay
- Voltage: 100-240V, 50/60Hz
- Max load per channel: 20A
- Total max load: 80A
- Dimensions: 250 x 90 x 66.5mm
- Shell material: PC V0 flame-retardant
- Communication: Wi-Fi & RS-485
- Compatibility: Works with all smart home systems & the eWeLink app
- Certifications: CE, FCC
