Sonoff SPM Stackable Power Meter Main Unit
32 $ with Free Delivery đ
This product can be used to check your circuit breaker's power consumption from an app
We want you to know
- Max Load: 20A/Gang – 80A/Total Max
- SONOFF SPM MAIN IS REQUIRED.
- SPM stackable 4-channel relays is sold separately.
This product can be used to check your circuit breaker's power consumption from an app
Free DELIVERY – cash on deliveryÂ
Product Information
Sonoff SPM Stackable Power Meter | Main
Sonoffâs Stackable Power Meter (SPM) is a professional category, DIN-rail compatible, Sonoff SPM stackable relay with power meter and overload protection, with up to 20A per channel max. capacity. It can save consumption to a memory card (not an accessory).
Features:Â
- Communicated by RS-485: The Sonoff SPM Main communicates with the Sonoff SPM-4Relays via RS-485, which enables multi-terminal and stable long-distance data transmission.
- Overload Protection: Once the Sonoff SPM overcharge protection is activated, it protects your device from burns.
- Works With Alexa & Google Assistant: You can directly ask your Amazon Echo Dot or Echo Show and Google Assistant speakers/smart displays to turn on/off your Sonoff SPM outputs independently.
Product Information
Sonoff SPM Stackable Power Meter | Main
Sonoffâs Stackable Power Meter (SPM) is a professional category, DIN-rail compatible, Sonoff SPM stackable relay with power meter and overload protection, with up to 20A per channel max. capacity. It can save consumption to a memory card (not an accessory).
Features:Â
- Communicated by RS-485: The Sonoff SPM Main communicates with the Sonoff SPM-4Relays via RS-485, which enables multi-terminal and stable long-distance data transmission.
- Overload Protection: Once the Sonoff SPM overcharge protection is activated, it protects your device from burns.
- Works With Alexa & Google Assistant: You can directly ask your Amazon Echo Dot or Echo Show and Google Assistant speakers/smart displays to turn on/off your Sonoff SPM outputs independently.
Specifications
What's included
- 1x Main Unit.
- 1x 50cm RVVSP.
- 1x User Manual.
Delivery, Returns & Warranty
Delivery
Enjoy free delivery across Lebanon on orders over $30. We also offer pickup and 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.
Is this a gift or surprise? Please choose a gift-wrapping option on the checkout page if you wish to add extra gift-wrapping. Extra costs may apply.
Download Specs & Manual


Sonoff SPM Stackable Power Meter
One Sonoff SPM-Main can be connected 32SPM-4Relays. Each 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 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.
