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
Control devices
InnPro
Smart controllers
Smart Home
Sonoff
Discover a world of innovation and technology with our wide range of electronic products. Our collection is designed to enhance your daily life. Explore the latest in electronics and elevate your tech experience with us.
We understand that the quality of your electronics directly impacts your daily life, which is why we source and offer only the finest materials and craftsmanship. Our dedication to providing reliable, durable, and high-performing products is unwavering.
Providing you with reliable performance and durability.
User-Centric Design
Easy to use, enhancing your overall experience.
Statistics
Performance
Discover how our products are setting new benchmarks in the world of electronics.
24 800
Power Bank
Equipped with fast-charging technology and multiple USB ports.
50.6%
Faster Wi-Fi Router
Provides a significant boost in internet speed, ensuring seamless streaming.
10 000+
Hours LED TV Lifespan
Longevity with LED TV boasting over 10 000+ hours of performance.
Goal-Oriented Approach
Stay on track with a focus on end objectives. This feature prioritizes tasks that align with your core objectives, ensuring productivity is always linked to purpose.
The charger not only charges your devices faster but also does so with high energy efficiency, minimising energy waste and helping to reduce carbon footprint.
Let their voices guide you through the real-world benefits and challenges of offering.
5.00
“I recently purchased a laptop and I'm thoroughly impressed. The high-resolution display and fast processor have significantly enhanced my design workflow. Their staff was knowledgeable and helped me choose the perfect model for my needs!”
Emily Torres
Graphic Designer
5.00
“I needed a new projector to manage my social media campaigns on the go. This store had a wide selection, and their staff was incredibly helpful in helping me!”
Alex Rodriguez
Digital Marketing Manager
5.00
“Their selection of stylish and functional smart lighting and home automation products was impressive. The staff provided detailed demonstrations and were well-versed in the latest trends. A great resource for interior designers looking for modern tech solutions.”
Jessica Lee
Interior Designer
5.00
“I recently purchased a laptop and I'm thoroughly impressed. The high-resolution display and fast processor have significantly enhanced my design workflow. Their staff was knowledgeable and helped me choose the perfect model for my needs!”
Emily Torres
Graphic Designer
5.00
“I needed a new projector to manage my social media campaigns on the go. This store had a wide selection, and their staff was incredibly helpful in helping me!”
Alex Rodriguez
Digital Marketing Manager
5.00
“Their selection of stylish and functional smart lighting and home automation products was impressive. The staff provided detailed demonstrations and were well-versed in the latest trends. A great resource for interior designers looking for modern tech solutions.”
Jessica Lee
Interior Designer
5.00
“As a software engineer, I need reliable and high-performance gadgets. I found exactly what I needed.”
Michael Chen
Software Engineer
5.00
“I was looking for an affordable tablet for my classroom activities. Their tablets are durable, user-friendly, and have excellent parental controls.”
Linda Kim
Elementary School Teacher
5.00
“The products I've purchased have always exceeded my expectations in terms of performance and durability.”
David Pavel
Software Engineer
5.00
“As a software engineer, I need reliable and high-performance gadgets. I found exactly what I needed.”
Michael Chen
Software Engineer
5.00
“I was looking for an affordable tablet for my classroom activities. Their tablets are durable, user-friendly, and have excellent parental controls.”
Linda Kim
Elementary School Teacher
5.00
“The products I've purchased have always exceeded my expectations in terms of performance and durability.”
David Pavel
Software Engineer
5.00
“I bought a pair of wireless headphones and I'm loving them! The sound quality is great for both music and online classes. The store offered a great discount for students, which was a big plus.”
Sarah Johnson
College Student
5.00
“As a journalist, I need a reliable speaker for interviews. Specialists offered a range of professional-grade speakers. Their staff was knowledgeable about the nuances of audio quality and storage capabilities, which helped me make an informed choice. Their dedication to customer education is noteworthy.”
Daniel Smith
Freelance Journalist
5.00
“The product selection is unparalleled, and the quality of their electronics is top-notch. As a marketing manager, I rely on the latest tech to stay ahead in the industry.”
Sofi Johnson
Marketing Manager
5.00
“I bought a pair of wireless headphones and I'm loving them! The sound quality is great for both music and online classes. The store offered a great discount for students, which was a big plus.”
Sarah Johnson
College Student
5.00
“As a journalist, I need a reliable speaker for interviews. Specialists offered a range of professional-grade speakers. Their staff was knowledgeable about the nuances of audio quality and storage capabilities, which helped me make an informed choice. Their dedication to customer education is noteworthy.”
Daniel Smith
Freelance Journalist
5.00
“The product selection is unparalleled, and the quality of their electronics is top-notch. As a marketing manager, I rely on the latest tech to stay ahead in the industry.”
Sofi Johnson
Marketing Manager
5.00
“I recently purchased a laptop and I'm thoroughly impressed. The high-resolution display and fast processor have significantly enhanced my design workflow. Their staff was knowledgeable and helped me choose the perfect model for my needs!”
Emily Torres
Graphic Designer
5.00
“As a software engineer, I need reliable and high-performance gadgets. I found exactly what I needed.”
Michael Chen
Software Engineer
5.00
“I bought a pair of wireless headphones and I'm loving them! The sound quality is great for both music and online classes. The store offered a great discount for students, which was a big plus.”
Sarah Johnson
College Student
5.00
“I needed a new projector to manage my social media campaigns on the go. This store had a wide selection, and their staff was incredibly helpful in helping me!”
Alex Rodriguez
Digital Marketing Manager
5.00
“I was looking for an affordable tablet for my classroom activities. Their tablets are durable, user-friendly, and have excellent parental controls.”
Linda Kim
Elementary School Teacher
5.00
“As a journalist, I need a reliable speaker for interviews. Specialists offered a range of professional-grade speakers. Their staff was knowledgeable about the nuances of audio quality and storage capabilities, which helped me make an informed choice. Their dedication to customer education is noteworthy.”
Daniel Smith
Freelance Journalist
5.00
“Their selection of stylish and functional smart lighting and home automation products was impressive. The staff provided detailed demonstrations and were well-versed in the latest trends. A great resource for interior designers looking for modern tech solutions.”
Jessica Lee
Interior Designer
5.00
“The products I've purchased have always exceeded my expectations in terms of performance and durability.”
David Pavel
Software Engineer
5.00
“The product selection is unparalleled, and the quality of their electronics is top-notch. As a marketing manager, I rely on the latest tech to stay ahead in the industry.”
Sofi Johnson
Marketing Manager
Evolutionize Your Content Creation with Our Dynamic Tools
Whether you're crafting product showcases or engaging customer interactions, our solutions are designed to elevate every aspect of your electronic business presentation.
recommended
You May Also Like
Make confident choices and discover the best electronic solutions.
5.00 from 144+ reviews
Pinnacle of Modern Tech Unveiling the Latest in Electronics
Explore and discover cutting-edge wearables, as well as futuristic devices, in our expansive tech showcase.
