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SONOFF SPM-Main Smart Stackable Power Meter Control Unit
Price: 38.50 €
| Products ID: | 144682 |
|---|---|
| Manufactured by: | Sonoff |
| Availablity: | Ready to Order |
| Delivery Time | 5-10 business days |
| EAN: | 6920075778021 |
Delivery options to:
Choose countryThe SONOFF SPM-Main is the central control unit of the smart stackable metering system, delivering overload protection, data monitoring, and energy statistics.
Key Features
- Cloud connectivity via Ethernet or 2.4 GHz Wi-Fi using the eWeLink app
- RS-485 interface for long-distance multi-terminal communication with SPM-4Relays
- Supports connection of up to 32 relay modules and up to 128 channels
- MicroSD slot supports 8 GB to 32 GB cards for secure local data logging
- Standard DIN-rail mounting designed for electrical cabinets
- Flame-retardant PC V0 housing material
| Compatible with | Sonoff SPM-4Relay |
|---|---|
| Voltage | 100V~240V AC |
| Frequency | 50/60Hz |
| Current | max. 50mA |
| Wi-Fi frequency | 2.4 GHz |
| Wi-Fi standard | IEEE802.11b/g/n |
| Number of channels | 4 |
| Voice assistants | Amazon Alexa & Google Assistant |
| App | eWeLink (Android, iOS) |
| MCU | ESP32 GD32F |
| Dimensions | 142.5x90x66.5 mm |
| Housing material | PC V0 (flame-retardant) |
| Mounting | On DIN rail |
| Connection | RS485 |
| Operating temperature | -10°C~+40°C |
| Operating humidity | 5%-95% (non-condensing) |
| Weight | 214g |
| Colour | White |
| Certification | CE/UKCA/FCC/ROHS |
| Warranty | 24 months |
How many relay units can connect to one SPM-Main?
One SONOFF SPM-Main control panel can connect up to 32 SPM-4Relay modules, managing up to 128 channels in total.
What size SD card is supported for local logging?
The SPM-Main control panel supports 8 GB to 32 GB SD memory cards, which are sold separately.
How does the main unit communicate with relay modules?
The SPM-Main communicates with the SPM-4Relay units via an RS-485 bus connection.
Frequently bought together
15+ yearsLocal Latvian online store
Fast dispatchWithin 24h for in-stock items
Easy returnsWarranty and simple returns
38.50 €
