Sonoff · MINI-ZB1GSP

Sonoff MINI ONE PM (MINI-ZB1GSP) in-wall Zigbee relay 16 A with energy metering

Name: Sonoff MINI ONE PM (MINI-ZB1GSP) in-wall Zigbee relay 16 A with energy metering
Brand: Sonoff
SKU: 6979033600515
Price: 579 MDL
Availability: InStock

579 MDLIn stock

Energy metering relays

Zigbee

Bluetooth

Manufacturer images

579 MDLIn stock

What it needs to work

A compatible hub is required.

Suitable gateways and hubs

Buy with installation

Check compatibility

Max load current per channel: 16 A
Connectivity: Zigbee, Bluetooth
Mounting: In a wall box

In-wall Zigbee relay rated 16 A / 3840 W with energy metering, solar generation included, and an S1 input for a rocker switch or push button. Needs a Zigbee gateway and a neutral wire.

37 specifications from manufacturer documents

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The right choice starts with specifications

Device passport

Document model: MINI-ZB1GSP

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

Power and load6

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.	16 A16 A, resistive load. The two L Out terminals are joined internally and do not add capacity. A 16 A MCB or RCBO goes 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.	3840 W [4]
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.	16 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-phaseAs in manual V1.0 and the 2026 brochure; the product page and help centre say 110–240 V~. 230 V mains is within both [1]
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 [1]

Connectivity and compatibility12

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.	Zigbee, BluetoothZigbee 3.0 (IEEE 802.15.4) is the main link and the device also acts as a router. Bluetooth LE serves Proximity Mode: the phone controls the relay directly when the gateway is unavailable [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 Zigbee gateway is needed: ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost or ZBDongle-P/-E. Bluetooth mode works only after pairing with a gateway and is a fallback when it is unavailable [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 via a SONOFF Matter bridge: ZBBridge-U, iHost or Cube OS with a SONOFF Zigbee dongle [2]
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.	YesWorks with Home Assistant via ZHA or Zigbee2MQTT (local Zigbee coordinator); when the gateway is unavailable the app controls the relay over Bluetooth. Energy data is kept on the device while offline [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 (needs the maker's script) or Zigbee2MQTT (from v2.11.0); per the maker's table, energy data in ZHA/Z2M comes with caveats [3]
App — what it means The maker’s app used to set up and control the device.	eWeLink (via a SONOFF Zigbee gateway) [1]
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.	Silicon Labs EFR32MG21 [1]
Zigbee	Zigbee 3.0, IEEE 802.15.4 [1]
Radio frequencies and transmit power	Zigbee: 2405–2480 MHz (≤10 dBm); Bluetooth LE: 2402–2480 MHz (≤10 dBm) [1]
Zigbee router (repeater)	Yes [2]
Wireless range — what it means The stated radio range, usually in open space. Walls and floors cut it noticeably.	180 mDefault range to the gateway; up to 250 m with Turbo mode. Test conditions not stated [2]
Compatible gateways	Recommended: ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost; also ZBDongle-P, ZBDongle-E [1]

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.	In a wall boxConcealed in a wall box behind a switch or socket; a 60 mm deep box is recommended [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.	0.75–2.5 mm² (18–14 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.	39.5 × 33 × 16.8 mm [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.	Required [3]
Weight — what it means The device’s weight without packaging, per the maker.	27.3 g [1]
Housing material	PC [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 [1]
Upstream protection	16 A MCB or RCBO upstream [1]

Control and features6

Channels — what it means How many separate circuits the relay switches and measures. A multi-channel unit tracks each panel circuit separately.	1 [1]
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 a blue LED; no screen [1]
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.	YesCuts the load when set current, voltage (including undervoltage) or power limits are exceeded, and on overheating [3]
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.	Rocker switch (latching), momentary push buttonS1 terminal: rocker switch (default) or momentary push button; detach mode separates the relay from the switch for smart bulbs [1]
Detached key mode (scene button) — what it means The switch wired to the module can be decoupled from the relay: the load stays powered and a press runs a scene. Needed when the circuit has smart bulbs.	Supported: the wall switch is decoupled from the relay so smart bulbs stay powered [3]
Inching mode	Supported [3]

Measurement and detection4

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 and power, energy and runtime; bi-directional metering — generation, e.g. from balcony solar panels, can be logged as a negative value [3]
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
Bi-directional metering	YesTracks both consumption and generation (e.g. solar panels) [2]
History and cost tracking	Up to 1 year of cloud data, cost tracking with time-of-use tariffs, Excel export [3]

Operating conditions2

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.	−10…40 °C [1]
Operating humidity — what it means The rated relative humidity range, non-condensing.	10–90%Non-condensing [1]

Model and version1

Colour — what it means The housing colour of this model. Other colours in the same series are separate products.	White, GreenWhite housing with a green terminal block [1]

Manufacturer documents

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Delivery and stock

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Warranty and documents

The warranty is at least 12 months. The exact period and conditions for equipment and installation work are stated in the sales documents and the accepted proposal. Further support is agreed for each project.

Can I return the product?

Current conditions are published on the Return policy page. Email office@casasmart.md with your order number for the steps relevant to your situation. Statutory consumer rights continue to apply.

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