Smart Home Switch Sonoff SPM-Main | LAN (ethernet)
Smart Home Switch Sonoff SPM-Main | LAN (ethernet)
Product:
SKU Code:
SPM-Main
Bar code:
6920075776973
Availability in stock:
On order..
Availability in the supplier's warehouse:
6 pcs.
Price:
€ 26.46
Delivery time at the pickup address:
To our warehouse:
5
working days
Shipping company:
0
working days
Total days:
5
working days
Today 22.06.2026
Shipping cost:
€ 0.00
Shipping time to parcel box:
To our warehouse:
5
working days
Shipping company:
2
working days
Total days:
7
working days
Wednesday 24.06.2026
Shipping cost:
From € 2.50
Shipping time by courier:
To our warehouse:
5
working days
Shipping company:
3
working days
Total days:
8
working days
Thursday 25.06.2026
Shipping cost:
From €
In order for above mentioned delivery dates by parcel locker and courier to be met, order has to been placed in time and seller has managed to send it out by the end of working day.
Sonoff SPM-Main smart switch
The Sonoff SPM-Main smart switch, which enables power consumption measurement and supports connectivity via both Ethernet and Wi-Fi. It can handle up to 128 channels - you can combine it with up to 32 SPM-4Relay switches (4 channels each), which are available for purchase separately. What's more, overload protection prevents damage to your devices. The product is also very easy to install.
Multiple applications
The SPM-Main switch will prove its worth in many different applications. For example, it will allow you to find out how much electricity your tenants use per month, or find out the energy consumption of a shopping center or office. The product will also prove useful in a server room or cryptocurrency mine - the overload protection function will allow you to avoid damaging certain equipment.
Reliable signal transmission
Enjoy the ability to connect devices. SPM-Main communicates with the cloud via Ethernet or Wi-Fi connectivity. It also connects to SPM-4Relay switches via RS-485, so it can provide stable transmission over long distances. Connection problems are a thing of the past!
Power consumption meter
Do you want to check the changes in power consumption in each room in the office? Or do you care to know how much electricity is used by your tenants? With Sonoff it is possible! SPM-Main and SPM-4Relay switches allow you to precisely measure power consumption. You can find all the information in the eWeLink app. This allows you to check power consumption without leaving the house - just reach for your phone!
Overload protection
Increase security in your server room and don't be afraid of damaging your devices. The switch offers an overload protection function. When you activate it, the equipment will automatically shut down when the current, voltage or power reaches the value indicated in the application. A load delay function is also available.
Supports up to 128 channels
One SPM-Main module allows you to control up to 32 SPM-4Relay switches. What's more, each SPM-4Relay offers up to 4 independent channels with a maximum load of 20A each. This means that the SPM-Main can handle as many as 128 channels! This makes it ideal, for example, in a block of apartments, making it possible to check the energy consumption of tenants of rented apartments.
Additional facilities
Now you can save the history of energy consumption measurements from the last 180 days. The switch is equipped with an SD card slot (8-32GB, SDHC). This allows you to export data conveniently and gives you the assurance that you won't lose any important information. Mounting the SPM-Main and SPM-4Relay switches won't cause you any problems either. You can easily mount them on the guide rail. Note: the SD card is not included in the kit.
| 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 |
| Compatible SD cards | 8-32GB, SDHC |
Delivery and Shipping
We know that time is money. That is why our core products, including the full range of VIDEX LED lighting, are in stock in our warehouse. This allows us to ensure fast and accurate order processing for both private individuals and B2B clients across the Baltics.
Delivery methods:
Parcel machines (Omniva, Venipak, LP Express / Unisend): A convenient and fast way to receive small and medium-sized goods at your preferred time.
Courier delivery: Delivery right to the door of your home, office, or project site. Ideal for larger orders, tools, and heavier goods.
B2B and pallet delivery: For large-volume orders and wholesale contract clients, we provide pallet delivery directly to your site, production facility, or warehouse.
Orders are processed and handed over for delivery immediately after receipt of payment (or in accordance with the B2B postpaid contract). Exact delivery costs are calculated automatically at checkout based on the size and weight of the items.
Payment Methods and Procedures
At opentools.lv, we provide secure and fast payment for your purchases. Payment processing is handled by our partner MakeCommerce (Maksekeskus AS), guaranteeing the highest data security standards.
Available payment methods:
Online banking and payment cards: Fast and secure payments with VISA, Mastercard, and major online banks (Swedbank, SEB, Citadele, Luminor, etc.).
Bank transfer and B2B deferred payment: For businesses and regular partners (contract clients), we provide a specialized B2B system. It allows you to place orders conveniently and receive postpaid invoices or deferred payments. Contact us to sign a partnership agreement and gain access to the B2B platform!
All payments are made in euros (EUR). Order processing and preparation for delivery begin immediately upon successful payment or in accordance with the terms of the B2B contract.
Available payment methods:
Online banking and payment cards: Fast and secure payments with VISA, Mastercard, and major online banks (Swedbank, SEB, Citadele, Luminor, etc.).
Bank transfer and B2B deferred payment: For businesses and regular partners (contract clients), we provide a specialized B2B system. It allows you to place orders conveniently and receive postpaid invoices or deferred payments. Contact us to sign a partnership agreement and gain access to the B2B platform!
All payments are made in euros (EUR). Order processing and preparation for delivery begin immediately upon successful payment or in accordance with the terms of the B2B contract.
