Sonoff SPM-Main Smart Switch Wi-Fi / Ethernet Power Meter
-52%
| Products ID: | 84919 |
|---|---|
| Manufactured by: | Sonoff |
| Availablity: | Ready to Order |
| Delivery Time | 5-12 business days |
| EAN: | 6920075776973 |
Delivery options to:
LatviaThe Sonoff SPM-Main smart switch enables power consumption measurement and supports connectivity via both Ethernet and Wi-Fi. It is a reliable solution for monitoring electricity usage in offices, shopping centers, server rooms, or residential buildings, while protecting devices from overload.
Key Features
- Extensive Support: One SPM-Main can control up to 32 SPM-4Relay switches, managing a total of up to 128 channels.
- Power Measurement: Accurately track power consumption for each room using the eWeLink app.
- Reliable Connectivity: Communicates via Ethernet or Wi-Fi, and connects to SPM-4Relay switches via stable RS-485 transmission.
- Overload Protection: Automatic shutdown when current, voltage, or power reaches app-defined limits.
- Data Export: Save up to 180 days of energy consumption history via an SD card slot (8-32GB SDHC, card not included).
| Specification | Details |
|---|---|
| Brand | Sonoff |
| Model | SPM-Main |
| Color | White |
| Input | 100-240V ~50/60Hz 50mA max. |
| Wi-Fi | 802.11 b/g/n 2.4GHz |
| Material | PC V0 |
| Dimensions | 142.5x90x66.5mm |
SMS & email notification
SMS notification before arrival
We want you to be happy with your purchase. If something isn't right, here's how returns work.
Return window
Most unused items can be returned within 30 days of delivery for a full refund or exchange. Items must be in original condition with original packaging.
Refund timeline
Once we receive and inspect your return, a refund is issued within 7–10 business days to the original payment method.
Conditions
- Item must be unused and in original condition
- Include your receipt or proof of purchase
- Perishable or custom-made items are non-returnable
- Return shipping is covered only for faulty or incorrect items
Ready to return?
Contact us and we'll guide you through the process.




























