Sonoff · BASIC-ZB1GSP

Sonoff BASIC-ZB1GSP Zigbee DIN-rail relay 32 A / 7680 W with energy monitoring

Name: Sonoff BASIC-ZB1GSP Zigbee DIN-rail relay 32 A / 7680 W with energy monitoring
Brand: Sonoff
SKU: 6979033600652
Price: 599 MDL
Availability: OutOfStock

599 MDLOut of stock

Energy metering relays

Zigbee

Manufacturer images

599 MDLOut of stock

What it needs to work

A compatible hub is required.

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Max load current per channel: 32 A
Connectivity: Zigbee
Mounting: DIN rail (panel)

Single-phase Zigbee DIN-rail relay rated 32 A / 7680 W: it measures voltage, current, power and energy and breaks live and neutral together. A compatible SONOFF Zigbee gateway is required.

38 specifications from manufacturer documents

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The right choice starts with specifications

Device passport

Document model: BASIC-ZB1GSP

Specifications checked against the linked manufacturer documents. Load limits, package details and measurement conditions are retained.Checked 18 October 2026

Power and load7

Max load current per channel — what it means The highest current the relay switches and measures on one channel. As a guide at 230 V: 16 A ≈ 3.7 kW, 20 A ≈ 4.6 kW, 25 A ≈ 5.8 kW, 32 A ≈ 7.4 kW — compare with your water heater, underfloor heating or heater.	32 ARated 100–240 V~, 32 A max. A 32 A MCB or RCBO must be installed upstream [1]
Max power per channel (resistive) — what it means Maximum resistive load per channel per the documentation: water heater, heater, underfloor heating. For motors and large power supplies the permitted power is lower.	7680 W [1]
Max total current — what it means Current the device handles across all channels at once. On multi-channel models the total is often lower than per-channel current × number of channels.	32 ASingle-channel device: total current equals the channel current [1]
Supply voltage — what it means The supply voltage (and current, if stated) as the maker gives it. It must match your mains or adapter.	100–240 V AC, 50/60 Hz, single-phaseSingle-phase only; connecting to a multi-phase supply may damage the device [2]
Standby power — what it means How much power the device draws on its own while idle. It matters for devices that run around the clock.	Not stated by the manufacturer
Power source — what it means Where the device gets its power: 230 V mains, an adapter, USB, batteries or a built-in battery.	230 V mains [2]
Rated impulse voltage	4 kV [2]

Connectivity and compatibility11

Connectivity — what it means The wireless link or network the device uses. Wi-Fi connects straight to the router; Zigbee, Thread and Bluetooth Mesh work through a hub or gateway.	ZigbeeZigbee 3.0 (IEEE 802.15.4); also acts as a network router [1]
Hub required — what it means Whether the device needs a separate hub, gateway or coordinator to work in a smart home. If so, it is sold separately unless stated otherwise.	Hub (gateway) requiredA compatible Zigbee gateway is required: ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost or a ZBDongle-P/-E USB adapter [1]
Matter support — what it means Whether the device supports the Matter standard, directly or through a bridge. Matter lets you add it to Apple Home, Google Home, Alexa and Home Assistant.	Via the maker's bridge hubInto Apple Home and Google Home via a SONOFF Matter bridge: ZBBridge-U, iHost or Cube OS with a SONOFF Zigbee dongle [3]
Works without internet — what it means Whether the device keeps working over the local network or through a hub when the internet is down. Cloud features (remote access, voice assistants) need the internet.	YesVia a local Zigbee coordinator: the maker lists Home Assistant and Zigbee2MQTT compatibility. Cloud-free operation of SONOFF gateways in eWeLink is not described; while offline, energy data is kept on the device [3]
Home Assistant — what it means How the device connects to Home Assistant: a built-in integration, a Zigbee coordinator, Matter or the maker’s cloud integration.	Via a Zigbee coordinator or hubVia a Zigbee coordinator (ZHA or Zigbee2MQTT); the maker's table marks Home Assistant and Zigbee2MQTT as compatible [3]
App — what it means The maker’s app used to set up and control the device.	eWeLink (via a SONOFF Zigbee gateway) [2]
Processor / radio chip — what it means The microcontroller or radio module inside, per the maker (for example ESP32). For firmware such as WLED and ESPHome it determines available features and whether the device can be re-flashed.	Telink TLSR8656 [2]
Zigbee	Zigbee 3.0, IEEE 802.15.4 [1]
Radio frequencies and transmit power	Zigbee: 2405–2480 MHz (≤10 dBm) [2]
Zigbee router (repeater)	Yes [1]
Compatible gateways	Recommended: ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost; also ZBDongle-P, ZBDongle-E [2]

Housing and installation8

Mounting — what it means How and where it is installed: in a wall box, on a wall or ceiling, on a DIN rail, on a table or in a socket.	DIN rail (panel)Fits a 35 mm DIN rail in the panel, directly after the circuit breaker [2]
Terminal wire size — what it means Which wire sizes the terminals accept, in mm². High loads need cable of matching size, chosen by an electrician for the current and run length.	4–10 mm² (11–6 AWG), solid or stranded copper only [1]
Dimensions (W × H × D) — what it means The device’s size in millimetres as the maker states it. Check that it fits the wall box, niche or shelf.	84 × 66.5 × 18 mmAs documented. 18 mm is the width on the DIN rail (1 module) [1]
Weight — what it means The device’s weight without packaging, per the maker.	93.5 g [1]
Housing material	Polycarbonate (PC), UL94 V-0 flame rating [1]
Certifications — what it means Standards and certifications the maker lists for this model (for example CE, RoHS, Zigbee 3.0, Matter).	CE, RoHS, FCC, CP65, Zigbee 3.0, WWAAs on the product page; manual V1.0 lists CE/RoHS/FCC [1]
Neutral wire (N) — what it means Whether the wall box needs a neutral wire. Older wiring often brings only the live wire to the switch; then pick a model that works without N.	RequiredLive and neutral are wired in and out; the relay breaks both [2]
Upstream protection	32 A MCB or RCBO upstream [2]

Control and features7

Channels — what it means How many separate circuits the relay switches and measures. A multi-channel unit tracks each panel circuit separately.	1Single-channel relay for one panel circuit [2]
Built-in display — what it means A screen on the housing shows power, voltage and consumption right at the panel, no phone needed.	NoThe housing has only a button and two LEDs (red for the relay, blue for the network); no screen [2]
Cut-off on set limits — what it means The device switches the load off by itself if current, power or voltage limits set in the app are exceeded. It does not replace the circuit breaker in the panel.	YesCurrent (up to 32 A), voltage and power limits are set in the app; when exceeded the load is cut off and can be restored remotely. When triggered, the red LED flashes rapidly [4]
Wired wall switch input — what it means Whether you can keep an ordinary wall switch or push button and wire it to the module, so the light works from both the switch and the app. Shows which switch types are supported; on dimmers a momentary button usually also adjusts brightness when held.	No inputThe wiring diagram shows only N and L input and output terminals; there is no wall switch input [2]
Double-pole switching (L and N)	YesOpens live and neutral at once for full isolation of the load [1]
Inching mode	Supported: auto-off or auto-on after 0.5 s to 23 h 59 min 59.5 s [4]
Switching cycles	10 000“Automatic action: 10000 cycles” per the spec [2]

Measurement and detection3

Measured values — what it means Which values the device reports in the app. Energy in kWh lets you work out costs; voltage helps spot sags and surges on the line.	Voltage (V), current (A), power (W), energy (kWh)Real-time voltage, current, power and energy. Metering works only when the load neutral is connected to the device's output N terminal. Electricity cost tracking is not listed for this version [1]
Measurement accuracy — what it means Measurement error per the documentation, e.g. ±2 % for power. Unless meter certification (such as MID) is stated, readings are for tracking use, not for billing with the supplier.	Not stated by the manufacturer
History and cost tracking	180-day energy history, data export [4]

Operating conditions3

Operating temperature — what it means The air temperature range the device is rated for. The lower limit matters outdoors, on balconies and in unheated rooms.	−15…50 °C [2]
Operating humidity — what it means The rated relative humidity range, non-condensing.	10–90%Non-condensing [1]
Installation environment	Indoor only [1]

Model and version1

Colour — what it means The housing colour of this model. Other colours in the same series are separate products.	White [1]

Manufacturer documents

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