The SPM 4-Relay module monitors power consumption on 4 individual circuits and provides relay control to switch each circuit on or off remotely.
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Sonoff SPM 4Relay Stackable Power Meter (Last One Available)
Monitor and control up to 4 electrical circuits from your phone — track power usage per circuit and cut costs on your electricity bill.
50 $
Available
💵 Cash on Delivery
🚚 Free Delivery
Get it by Wed 10 Jun
Delivery
by Wed 10 Jun
1–4 working days
Pickup
Ready In about 1 hour (this morning at 11:18 AM)
Last one in stock
Once it's gone, it's gone
What people use it for
Available
Good to know
- Requires a Sonoff SPM Main Unit — the 4Relay cannot work alone.
- Requires a neutral wireThe third wire in your electrical box, usually blue or gray. Not all homes have it — an electrician can check in a few minutes. for installation.
- Turn off the power at your breaker before installation. Professional installation required — this is a panel-level device.
- Each relay monitors and controls one circuit independently — useful for per-circuit energy tracking across your home.
- Up to 4 relay modules can stack onto one SPM Main unit.
Smartio Guarantee
- Free Delivery on orders above $50
- 14-Day Exchange for unopened items
- Local Support on WhatsApp: +961 71 791 103
- Cash on Delivery available across Lebanon
🎄 Holiday Returns Extended
Orders placed between 20 November and 25 December
can be returned until 10 January.
Item must be sealed & unused. Standard return policy applies.
What people use it for
Works with:
Product Information
Sonoff SPM 4Relay — Stackable Power Meter (4 Channels)
The Sonoff SPM 4Relay is a professional-grade DIN rail (the standard metal rail inside your electrical panel/switchboard where circuit breakers are mounted) module that gives you smart control and power monitoring for 4 separate circuits. It mounts inside your electrical panel and lets you turn each circuit on or off from your phone, track power usage, and set overload protection.
Need more than 4 circuits? Stack multiple SPM 4Relays together — up to 32 units (128 channels total). Important: This module requires a Sonoff SPM Main Unit to operate.
Key Features:
- 4 Independent Channels: Control and monitor 4 circuits separately.
- Power Monitoring: Track real-time power, current, voltage, and total consumption per channel.
- Overload Protection: Set power limits — the relay cuts off automatically if a circuit exceeds the limit.
- Stackable: Connect up to 32 SPM 4Relays to one SPM Main Unit for large installations.
- DIN Rail Mounting: Installs directly in your electrical panel.
- Voice Control: Works with Google Assistant and Alexa.
💡 Pro Tip: This is ideal for offices, shops, or large homes where you want to monitor the electricity consumption of each circuit separately — like tracking how much the AC, lighting, and water heater each cost you.
Specifications
Brand
Sonoff
Model
SPM 4-Relay
Color
White
Input
100-240V~50/60Hz
Max power
20A/Gang 80A/Total Max
Dimension
250x90x66.5mm
Wireless connection
Wi-Fi 2.4 GHz
Working temperature
-10°C~40°C
What's in the Box
- 1x SPM 4-Relay.
- 1x 50cm RVVSP.
- 1x User Manual.
Delivery, Returns & Warranty
Delivery
Enjoy free standard delivery across Lebanon on orders over $50, or free pickup on orders over $30. We also offer same-day delivery options. For more details, visit our delivery information page.
Returns
We provide a 15-day return window for all orders, subject to certain exclusions. Please note that cash refunds are not available. For complete details, visit our return policy page.
Warranty
Our products are warranted to be free from manufacturing defects. If a product sold by us is found to be defective, we will, at our discretion, repair or replace it with a new one. Certain exclusions apply. For full details, please review our warranty policy page.
Buying a gift? Select gift-wrap at checkout (extra cost).
Sonoff SPM 4Relay Stackable Power Meter
One SPM-Main can be connected 32 SPM 4Relay. Each Sonoff SPM 4Relay has 4 isolated channels. Each channel can support maximum current of 20A, no fear of high power load.
Want to know the power consumption changes of each stall?
By checking eWeLink App on your mobile phone, you can monitor the electricity usage without leaving home. Through the eWeLink App, you can obtain the power consumption through a touch.
Overload Protection
Once the overload protection is enabled, you do not need to worry about electrical appliances being burned out, which helps remove potential safety hazards. In addition, you can also set the Sonoff SPM 4Relay overload delay activated to avoid spurious triggering.
180-day of Energy Usage Data
You can insert the SD card into SPM-Main to download and check over 180 days of your energy usage history at any time of the day through HTTP API. No need to worry about missing the important information.
Yes, the 4-Relay module requires the SPM Main Unit to connect to Wi-Fi and the eWeLink app. It cannot function standalone.
Yes, you can stack up to 32 modules on a single SPM Main Unit, monitoring up to 128 circuits total.
Each channel supports up to 20A, suitable for most household circuits.
This product comes with a 6-month warranty covering factory defects. If you experience any issues, contact Smartio within the warranty period.
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