# SONOFF Basic DIN Rail Matter Over WiFi Smart Switch (BASIC-1GSP)

SONOFF BASIC-1GSP is an unusually inexpensive way to add direct Matter control, double-pole switching, and metering to one high-current DIN-rail circuit. Its 32 A rating is useful only after a qualified electrician confirms the panel, conductors, protective device, load, and local approval, and most ecosystems still need eWeLink for the useful energy detail.

Canonical page: https://matterhome.io/devices/sonoff-basic-din-rail-basic-1gsp
Markdown page: https://matterhome.io/devices/sonoff-basic-din-rail-basic-1gsp.md
Author: Matterhome Editorial Team
Author profile: https://matterhome.io/authors/matterhome-editorial-team
Editorial lead: JC Martinez
Editor profile: https://matterhome.io/authors/jc-martinez

## Device Facts

- Brand: SONOFF
- Model: Basic DIN Rail Matter Over WiFi Smart Switch (BASIC-1GSP)
- Product type: Matter Wi-Fi DIN-rail smart switch with energy monitoring
- Category: Switches
- Connection: Matter over Wi-Fi
- Matter status: SONOFF sells BASIC-1GSP with direct Matter commissioning over 2.4 GHz Wi-Fi; its current guide documents on-off control in all five Matterhome ecosystems and power statistics in SmartThings and Home Assistant without a SONOFF hub.
- Launch date: 2026-05-29
- Thread border router required: No
- Brand hub required: No
- Typical price range: About $20 / €19.90 / £18 from SONOFF before shipping
- Markets: North America, Europe, United Kingdom
- Review status: Compatibility guide
- Product image: https://assets.matterhome.io/content/devices/sonoff-basic-din-rail-basic-1gsp/product.31e0e43a9f2e0bf0b8e3/source.webp
- Product image alt text: White SONOFF BASIC-1GSP DIN-rail switch with live and neutral input and output terminals
- Product image source: https://sonoff.tech/cdn/shop/files/BASIC-1GSP-MAIN.avif?v=1780470137&width=1600

## Ecosystem Support

- Apple Home: Supported
- Google Home: Supported
- Alexa: Supported
- SmartThings: Supported
- Home Assistant: Supported

## Best For

- Professionally installed water-heater, floor-heating, heat-pump, or other single-phase circuits that fit the documented electrical limits
- SmartThings or Home Assistant households that want current power statistics alongside Matter switching
- Buyers who want one-module DIN-rail control without adding Thread infrastructure or a brand hub

## Skip If

- The circuit, conductor size, upstream protection, panel approval, or installation method has not been checked by a qualified electrician
- Detailed energy data must appear in Apple Home, Google Home, or Alexa
- The load is multi-phase, exceeds 32 A, or cannot be verified against the device and local electrical rules
- Keeping eWeLink for energy history, thresholds, firmware, or recovery settings is unacceptable

## Setup Notes

- Have a professional electrician install and maintain BASIC-1GSP with the distribution board isolated and verified de-energized.
- Confirm single-phase 100-240 V power, live and neutral conductors, 4 to 10 mm² copper wiring, local panel approval, and an upstream 32 A MCB or RCBO before buying.
- Connect the load neutral to the output neutral terminal when energy monitoring is required; never reverse the live and neutral terminals.
- Pair from the chosen Matter app over 2.4 GHz Wi-Fi with a compatible Matter controller; retain eWeLink for firmware, detailed energy records, and protection settings.

## Known Limitations

- SONOFF's current platform table limits Matter power statistics to SmartThings and Home Assistant while listing ordinary control in all five ecosystems.
- The 180-day energy history, cost records, data export, charging protection, and configurable thresholds are documented on the eWeLink side rather than as portable Matter features.
- SONOFF lists CE, RoHS, FCC, CP65, and Matter certifications but does not name a UL or ETL listing; verify the hardware and installation method against local electrical requirements.
- Matterhome has not tested commissioning, terminal fit, metering accuracy, protection behavior, Wi-Fi range inside a panel, or heat under load.

## Pros

- Fits one standard DIN-rail module and switches both live and neutral conductors
- Handles one single-phase circuit up to 32 A with configurable protection thresholds
- Pairs directly over Matter without a Thread border router or SONOFF hub
- Exposes power statistics through Matter in SmartThings and Home Assistant

## Cons

- Requires professional distribution-board installation with an upstream 32 A MCB or RCBO
- Apple Home, Google Home, and Alexa do not receive power statistics in SONOFF's current Matter matrix
- Detailed history, cost calculations, exports, and protection settings remain eWeLink features
- SONOFF does not name a UL or ETL safety listing for this exact model

## Sources

- https://sonoff.tech/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp
- https://sonoff.tech/en-us/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp
- https://sonoff.tech/de-de/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp
- https://sonoff.tech/en-uk/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp
- https://sonoff.tech/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp.js
- https://sonoff.tech/en-us/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp.js
- https://sonoff.tech/de-de/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp.js
- https://sonoff.tech/en-uk/products/sonoff-basic-din-rail-matter-over-wifi-smart-switch-basic-1gsp.js
- https://help.sonoff.tech/docs/BASIC-1GSP
- https://cdn.shopify.com/s/files/1/0742/9963/8001/files/User_Manual_BASIC-1GSP_EN_V1.0_11a0edaf-d7ac-427f-8720-56604f8fee61.pdf?v=1782877770
- https://csa-iot.org/csa_product/basic-din-rail/
- https://sonoff.tech/cdn/shop/files/BASIC-1GSP-MAIN.avif?v=1780470137&width=1600

A water heater, underfloor-heating loop, or heat pump is a more serious automation target than a table lamp. SONOFF BASIC-1GSP puts one 32 A single-phase circuit on a standard 18 mm DIN-rail module, switches both live and neutral, and adds metering plus direct Matter-over-Wi-Fi control. At roughly $20, €19.90, or £18 from SONOFF, the device is cheap. The panel work is not.

Matterhome has not tested BASIC-1GSP. This guide is based on SONOFF's current storefronts, manual, support matrix, and the exact model family's Matter 1.4 certification. A qualified electrician still needs to decide whether the unit, load, protection, and installation method are acceptable where it will be used.

## A 32 A rating is not an installation plan

The exact model is `BASIC-1GSP`, and SONOFF's current store SKU is `6979033600379`. It accepts single-phase 100-240 V power at 50 or 60 Hz, measures `84 x 66.5 x 18 mm`, and uses separate live and neutral terminals on both the supply and load sides. The double-pole relay opens both conductors instead of leaving neutral connected.

SONOFF requires an upstream 32 A miniature circuit breaker or a residual-current breaker with integral overcurrent protection that complies with national standards. The manual specifies 4 to 10 mm² copper conductors, warns against reversing live and neutral, and says installation and maintenance belong with a professional electrician. It also rejects multi-phase power.

Those constraints matter more than the examples on the product page. SONOFF names EV charging, water heating, floor heating, heat pumps, and major appliances as possible jobs, but the product label alone does not prove that a particular load, panel, conductor, breaker, or local code allows the installation. Give the electrician the manual and exact circuit details before ordering several units.

Energy monitoring has its own wiring dependency. SONOFF says the load neutral must be connected to the output neutral terminal for metering to work. The eWeLink app can then show voltage, current, power, daily and longer-term consumption, cost estimates, and up to 180 days of records. It can also export usage data and apply current, voltage, and power thresholds.

## Choose the energy-data path before pairing

BASIC-1GSP joins a Matter controller directly over 2.4 GHz Wi-Fi. It does not need a Thread border router or a SONOFF hub. SONOFF documents QR-code commissioning for Apple Home, Google Home, Alexa, SmartThings, and Home Assistant, while CSA lists the certified hardware and firmware as `v1.0` under Matter 1.4.

The five logos do not mean identical data. SONOFF's current platform matrix lists remote control, voice control, and scenes across all five ecosystems. Power statistics are checked only for SmartThings and Home Assistant. Apple Home, Google Home, and Alexa buyers should expect a switch through Matter and plan to open eWeLink for consumption detail.

Even SmartThings and Home Assistant do not inherit every vendor feature. SONOFF documents 180-day history, electricity-cost records, exports, charging protection, configurable overload thresholds, logs, and several recovery settings inside eWeLink. Matter is the common control layer. The vendor app remains the maintenance and detailed-metering layer.

## Approve the circuit before ordering

BASIC-1GSP makes sense when a qualified electrician has already approved one single-phase DIN-rail circuit, the panel has reliable 2.4 GHz Wi-Fi, and simple cross-platform switching is useful. SmartThings and Home Assistant get the strongest documented Matter fit because SONOFF also exposes current power statistics there.

Skip it when the installation plan starts with the 32 A headline rather than the circuit design. Also skip it when energy history must live entirely in Apple Home, Google Home, or Alexa, or when an unnamed UL or ETL listing makes local acceptance uncertain.

[Aqara Dual Relay Module T2](/devices/aqara-dual-relay-module-t2) is a lower-current two-channel option with a DIN adapter, energy monitoring, dry contacts, and a required Aqara hub. [Shelly Pro 2PM Gen4](/devices/shelly-pro-2pm-gen4) uses a two-channel DIN format. [SONOFF Basic Gen5](/devices/sonoff-basic-gen5) is far cheaper for a lighter inline on-off job. BASIC-1GSP is the stronger fit only when one higher-current circuit, double-pole isolation, and panel-level metering are the actual requirements.