SONOFF SPM-Main smart energy metering system control panel, Wi-Fi

SONOFF control panel SPM-Main is the main device of SONOFF smart metering system, designed for use with SPM-4Relay expansion module. Supports up to 128 channels. With energy consumption metering.
SONOFF smart metering system enables network overload protection, network metering monitoring, and electricity consumption statistics collection and storage. It supports up to 128 channels (up to 32 SPM-4Relay modules), 20A maximum current for each channel, allows you to monitor 180 days of electricity consumption data, and manage each channel separately. It is a high-performance professional smart home tool that allows you to monitor the electricity consumption of residents or tenants; designed for homes, office buildings, industrial buildings, or even shopping malls.
Note: the device requires at least one SPM-4Relay module to operate., which is purchased separately.
Features:
This central station of the smart energy metering system communicates with the eWeLink cloud via Ethernet or Wi-Fi, and with SPM-4 relay modules via RS-485.
One control panel allows you to connect up to 32 expansion modules and supports up to 128 channels of 20A control and accounting.
The SPM-Main control panel allows the use of 8Gb-32Gb SD memory cards, where consumption data can be securely stored. SD cards are purchased separately.
Remote On/Off - You can turn all channels on and off remotely anytime, anywhere.
Sync Status - Check the actual status of the relay (on or off) using the app.
Home equipment electricity consumption data can be downloaded for accounting.
LAN mode is supported.
Mounted on a DIN rail, like a relay module, suitable for an electrical cabinet.
The housing material is made of non-flammable PC V0 safety class plastic.
Protection for all channels against overload, overvoltage, overcurrent.
Technical data:
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.
Works with Amazon Alexa Google Assistant.
App: eWeLink (Android, IOS).
MCU: ESP32 GD32F.
Dimensions: 142.5x90x66.5 mm.
Housing material: PC V0 (fireproof).
Installation: on DIN rail.
Connection to modules: RS485.
Supported SD card capacity: 8Gb/32Gb (card not included).
Operating temperature: -10°C~+40°C.
Operating humidity: 5%-95% (non-condensing).
Weight: 214g.
Color: white.
Certificates: CE/UKCA/FCC/ROHS.
Warranty: 24 months