Description
Sonoff’s Smart Stackable Power Meter (SPM) is a professional category, DIN-rail compatible, 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).
This is SPM’s main unit, with Ethernet and LAN support, SPM stackable 4-channel relays are not part of the product, they are sold separately.
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Connect up to 32 pcs. of SPM-4Relays One SPM-Main unit can be connected to 32 SPM-4Relays. Each SPM-4Relay has 4 isolated channels to help you manage devices more conveniently.
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Power metering You can monitor the power consumption by checking eWeLink App on your mobile phone. Obtaining current, voltage and power easily.
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Max.20A/Gang Each channel can support maximum current of 20A, no fear of high power load.
Communicated by RS-485 The SPM-Main communicates with the SPM-4Relays -
through RS-485, which allows for multi-terminal and stable long-distance data transmission.
- Overload Protection Once the overload protection is enabled, it can protect your devices from burning out.
Specifications
| Weight | 0,26 kg |
|---|---|
| Dimensions | 14,25 × 9,0 × 6,65 cm |
| Manufacturer smartphone app |
yes, free app: eWeLink (Android, iOS) |
| 2-way or 3-way switching |
no |
| Bluetooth |
Bluetooth pairing with phone |
| Brand |
Sonoff |
| Cloud mode |
default mode is connecting to the eWeLink cloud |
| Colour |
white |
| Controllable from internet |
yes |
| Dimmer feature |
no |
| DIN rail compatible |
yes |
| Embedded relay |
no |
| External switch supported |
no |
| Factory SKU ID |
SPM-Main |
| History |
up to 180 days power metering history stored on memory card (sold separately) |
| LAN mode |
yes, if the connection with the eWeLink cloud is disconnected, limited features |
| MQTT support |
no |
| Product type |
MAIN UNIT of professional, high performance control and power metering unit |
| _Remote control |
Ethernet / LAN, Wi-Fi |
| REST API support |
yes |
| RF transmitter / receiver |
no |
| _Type of the product |
roller shutter switch, consumption meter, relay |
| Voice control |
no |
| Wi-Fi |
yes |
| Wi-Fi standards |
802.11 b/g/n (2.4GHz) |
| Wiring |
230V AC (live and neutral) |
| Zigbee |
no |
| _Device power supply |
AC (110V-) (Live and Neutral) |
| Physical on/off button on device |
no |
| Device power supply |
100V-240V AC |