⚡ SONOFF Basic DIN Rail (BASIC-1GSP) — 32A Matter WiFi Smart Switch with Energy Monitoring

The SONOFF Basic DIN Rail (BASIC-1GSP) is a heavy-duty 32A Matter-over-WiFi smart switch that mounts directly onto a standard DIN rail in your DB board. Perfect for controlling geysers, EV chargers, heat pumps, pool pumps, and large appliance circuits with real-time energy monitoring. Features double-pole switching (disconnects both live AND neutral for full physical isolation), customizable overload protection (current, voltage, and power thresholds), and Matter ecosystem support for Apple Home, Google Home, Alexa, SmartThings, and Home Assistant — no hub required. MPN: BASIC-1GSP.

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Free Delivery

Orders over R2,500

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Local Stock

Ships from Gauteng

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32A / 7,680W

Heavy-Duty Loads

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Matter

Apple · Google · Alexa · HA

⚡ Key Features

Matter over WiFi — native integration with Apple Home, Google Home, Amazon Alexa, Samsung SmartThings, and Home Assistant; no proprietary hub required
32A / 7,680W Max Load — handles geysers (up to 7kW), EV chargers, heat pumps, pool pumps, electric floor heating, and major appliance circuits
Double-Pole Switching — physically disconnects BOTH live and neutral lines for 100% electrical isolation; safer for maintenance and during fault conditions
Real-Time Energy Monitoring — tracks voltage, current, power, and kWh consumption with daily/monthly/historical reports and cost calculation in the eWeLink app
Customizable Overload Protection — set thresholds for current, voltage, and power; device auto-disconnects when limits are exceeded
Standard DIN Rail Mount — clips onto any 35mm top-hat DIN rail in your DB board, sub-distribution panel, or industrial enclosure — no drilling or modifications
UniBusbar Relay — SONOFF's new relay design with lower heat dissipation, higher current handling, and longer service life
UL94 V-0 Flame Retardant Housing — highest flame-retardant grade; burning stops within 10 seconds after flame exposure
Heavy-Gauge Wire Support — terminals accept 4mm² to 10mm² (11 AWG to 6 AWG) solid or stranded copper conductors
Local Control — Matter enables local control on your LAN; continues working even when the internet drops
Inching / Pulse Mode — momentary relay pulse for gate triggers or auto-off after a set time
Voice Control — Siri (Apple Home), Amazon Alexa, Google Assistant

🏠 Perfect For South African Homes

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Geyser Control (Up to 7kW)

Most SA geysers are 2-4kW (9-18A). The BASIC-1GSP handles up to 32A / 7,680W — even oversized 4kW elements with safe margin. Schedule heating around solar generation, track exactly how much electricity your geyser uses, and switch off remotely.

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EV Charger Switching

Single-phase 32A EV chargers (e.g. 7kW wallboxes) fit comfortably within this device's spec. Use for time-of-use scheduling or as a smart isolator between the DB and your EV charger.

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Solar & Load Shedding

Combine with your inverter/battery monitoring to automate heavy loads. Pre-heat your geyser when solar is peaking, throttle non-essential circuits during outages, and track real consumption per circuit.

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Pool Pumps & Heat Pumps

Schedule pool pump cycles, control swimming pool heat pumps, or switch underfloor heating zones — all from your phone or via Home Assistant automations. Real-time power monitoring confirms loads are running as expected.

💡 Energy Monitoring Tip: Pair the BASIC-1GSP with Home Assistant's Energy Dashboard for a full picture of your geyser, EV, and heat-pump consumption. Compare hourly costs against your municipality's TOU tariff and identify your biggest expenses.

⚠️ Installation Note: Must be wired AFTER the air-circuit breaker (MCB) — NOT directly to the grid. Always install a correctly-rated MCB upstream. Electrical work in your DB board should be done by a qualified electrician. The terminals require 4–10 mm² conductors — proper crimping or ferrules are recommended.

📋 Technical Specifications

Product	SONOFF Basic DIN Rail (Matter over WiFi)
MPN / Model	BASIC-1GSP
Product Series	Basic Series
MCU / Chip	BK7238
Protocol	Matter over WiFi (2.4 GHz, 802.11 b/g/n)
Input Voltage	100–240V AC, 50/60 Hz
Max Load	32A / 7,680W (resistive)
Switching Type	Double-Pole (cuts both Live and Neutral)
Energy Monitoring	Voltage · Current · Power · kWh (real-time + historical)
Overload Protection	Customizable current, voltage, and power thresholds
Mounting	Standard 35mm DIN Rail (EN 50022)
Wire Gauge	11 AWG to 6 AWG (4 mm² to 10 mm²) — SOL/STR copper
Dimensions	84 × 66.5 × 18 mm
Weight	92.1 g
Housing Material	PC (Polycarbonate) — UL94 V-0 flame retardant
Operating Temp	-15°C to 50°C (15T50)
Operating Humidity	10% – 90% RH, non-condensing
Use Environment	Indoor only
App	eWeLink (iOS / Android) + any Matter-compatible app
Voice Control	Siri (Apple Home), Alexa, Google Assistant
Home Assistant	Yes (native Matter integration, full local control)
Local Control	Yes — works without internet via Matter LAN
Certifications	CE · RoHS · FCC · CP65
Warranty	1 Year Manufacturer Warranty

❓ Frequently Asked Questions

Can I use this to control my geyser?

Yes — it's actually one of the best uses. Most SA geyser elements are 2kW (~9A) to 4kW (~18A) at 230V. The BASIC-1GSP handles up to 32A / 7,680W, giving you generous safety margin. Combined with real-time energy monitoring, you can see exactly what your geyser costs to run and schedule it around solar generation or off-peak tariffs.

Does it require a hub?

No. Matter over WiFi means it connects directly to your home WiFi (2.4 GHz). However, to add it to Apple Home, Google Home, or Home Assistant via Matter, you do need a Matter controller — that can be an Apple HomePod (mini or full), Apple TV 4K, Google Nest Hub (2nd gen), Amazon Echo (4th gen+), or Home Assistant with the Matter integration. For eWeLink-only control, no controller is needed.

What does Double-Pole switching mean and why does it matter?

Most smart switches only disconnect the Live wire. Double-Pole switching disconnects BOTH Live AND Neutral simultaneously, giving you full physical isolation. This is much safer when servicing the controlled appliance — the entire circuit downstream is dead. Particularly important for high-current applications like geysers and EV chargers.

Will it work with Home Assistant?

Yes — it supports Matter natively. Pair it through Home Assistant's Matter integration for full local control with no cloud dependency. You'll get switch entity, power/voltage/current/energy sensors, and overload threshold configuration. Works in HA's Energy Dashboard out of the box.

Does it work during load shedding?

If your DB board is on UPS/inverter backup and your WiFi router is up, yes — the BASIC-1GSP continues working. Matter LAN control means you don't even need internet. Once mains returns, it restores to your chosen Power-On State (On / Off / Last State).

What is the overload protection?

You can set custom thresholds in the eWeLink app for max current (up to 32A), voltage (under-voltage and over-voltage), and total power. If any threshold is breached, the BASIC-1GSP cuts the load automatically — useful as a secondary safety layer above your DB board's MCB, especially for sensitive equipment.

Can I install this myself?

If you're comfortable working inside a DB board with the mains isolated at the main switch, yes — installation is straightforward (clip onto DIN rail, wire L-in / N-in / L-out / N-out, and pair via WiFi). Otherwise, have a qualified electrician do it. The terminals require 4–10 mm² conductors so proper crimping/ferrules and torque are important. Always install a correctly-rated MCB upstream of the device.

What's the difference between this and the BASICR4?

The BASICR4 is a small inline relay rated 10A / 2,200W, designed to fit in a junction box or behind an appliance. The BASIC-1GSP is DIN-rail mounted, rated 32A / 7,680W, with double-pole switching and real-time energy monitoring built in. Use the BASICR4 for lights, fans, and small appliances; use the BASIC-1GSP for geysers, EV chargers, heat pumps, and any heavy load you want monitored.