Sonoff Stackable Power Meter Main Unit

Sonoff Stackable Power Meter

Sonoff Stackable Power Meter Main Unit achieves smart management with overload protection, metadata monitoring, and electricity statistics. The SPM-Main communicates with the cloud through Ethernet or WiFi and communicates with the SPM-4Relays through RS-485, enabling multi-terminal and stable long-distance data transmission.

Want to know the power consumption changes of each tenant in your building? Want to realize the unified management of the whole shopping mall or your tenants? By checking the eWeLink App on your mobile phone, you can easily monitor electricity usage.

Once the overload protection is enabled, you do not need to worry about electrical appliances being burned out, which helps remove potential safety hazards. You can also activate the overload delay to avoid spurious triggering.

One SPM-Main can be connected with up to 32 SPM-4Relays. Each SPM-4Relay has 4 isolated channels to help the landlord solve the problem in electric charge sharing. Each channel can support a maximum current of 20A, so there is no fear of high power load.

You can insert an SD card into the SPM-Main to download and check over 180 days of energy usage history at any time via HTTP API. No need to worry about missing important information.

Note: You need to use the SPM-Main Unit along with at least one SPM-4Relay for the system to function.

Specifications

• Wi-Fi: 802.11 b/g/n 2.4GHz

• Micro SD card storage range: 8GB–32GB

• Input: 100–240V~ 50/60Hz 50mA Max

• Dimensions: 142.5 x 90 x 66.5 mm

• Color: White

• Shell material: PC V0

Features

• Connect up to 32 SPM-4Relays – One SPM-Main can be connected to 32 SPM-4Relays.

• Power metering – Monitor power consumption through the eWeLink App. Easily access current, voltage, and power.

• Max. 20A/Gang – Each channel supports up to 20A, ideal for high power loads.

• Communicates via RS-485 – Enables multi-terminal and stable long-distance data transmission between the SPM-Main and SPM-4Relays.

• Overload Protection – Protects your devices from damage by automatically disconnecting during power surges.

Icasa approved

NRCS Application currently in progress.
NRCS TA application number: SR #1-106756767