If you’ve been looking for an outdoor smart plug with Matter the brand-new Sonoff S61S Outdoor (S61STPF-PM-O) deserves your full attention. In this review I’ll cover everything: specs, real use cases, Matter compatibility with every major ecosystem, and whether the price-to-value ratio justifies it.
Short answer: it does. This is one of the most compelling outdoor smart plug launches of 2025, and in the Matter-certified exterior category it currently has almost no competition in the Spanish and European market.
What Is the Sonoff S61S Outdoor?
The Sonoff S61S Outdoor (model reference: S61STPF-PM-O) is the outdoor variant of the iPlug Gen2 S61s lineup from Sonoff. Unlike the indoor S61STPF, this version ships with an IP44 weather-resistance rating and a wide operating temperature range, making it suitable for permanent outdoor installations: garden lighting, irrigation controllers, terrace appliances, garages, and any exposed socket point.
What sets it apart from generic outdoor plugs is its native Matter 1.4 over WiFi certification. That means it connects directly to Apple Home, Google Home, Amazon Alexa, Home Assistant, and Samsung SmartThings — no proprietary bridges, no cloud lock-in beyond initial setup.
Full Technical Specifications
| Parameter | Value |
|---|---|
| Model | S61STPF-PM-O |
| Protocol | Matter 1.4 over WiFi |
| Network | WiFi 2.4 GHz |
| Max current | 16 A |
| Max power | 3,840 W |
| Voltage | 100–240 V AC |
| IP rating | IP44 |
| Operating temperature | -20°C to +50°C (-4°F to 122°F) |
| Plug type | Type F (Schuko) |
| Energy monitoring | Yes (voltage, current, power, accumulated energy) |
| Overload protection | Yes (configurable auto cut-off) |
| Overcharge protection | Yes |
| Control app | eWeLink |
| Voice control | Alexa, Google Assistant, Siri |
| Compatible ecosystems | Apple Home, Google Home, Alexa, Home Assistant, SmartThings |
Installation note: When installing outdoors in direct rain exposure, Sonoff recommends pairing this plug with a certified weatherproof enclosure box to maintain full IP protection for the whole assembly.
S61S Outdoor vs S61S Indoor: Which One Do You Need?
This is the first question most people ask when discovering the S61s range. Here’s the direct comparison:
| Feature | S61S Outdoor (S61STPF-PM-O) | S61S Indoor (S61STPF) |
|---|---|---|
| Intended use | Outdoor / exposed installation | Indoor |
| IP rating | IP44 | No IP certification |
| Temperature range | -20°C to +50°C | Standard indoor range |
| Matter | Yes (1.4) | Yes (1.4) |
| Energy monitoring | Yes | Yes |
| Approx. price | ~$19.90 USD | From $9.99 USD |
When to choose the Outdoor version: Any time the socket is exposed to humidity, rain, dust, or extreme temperature swings. If your installation is fully indoors, the standard S61STPF saves you money and takes less space.
Matter Compatibility: Apple Home, Google Home, Alexa & Home Assistant
The standout feature of the S61S Outdoor is its Matter 1.4 certification. This means true cross-platform compatibility — you’re not tied to a single ecosystem or app.
Does it need a Matter hub?
Yes. As a Matter over WiFi device, it requires a Matter controller on your local network. Common options:
- Apple HomePod mini or Apple TV 4K — for Apple Home / Siri
- Google Nest Hub (2nd gen) or Nest WiFi Pro — for Google Home
- Amazon Echo (4th gen or newer) — for Alexa
- Home Assistant with the native Matter integration enabled
Once paired with your Matter controller, the plug integrates alongside devices from any other Matter-certified brand — Meross, Shelly, TP-Link Tapo, and so on — all in one app.
Can I see energy stats in Apple Home or Google Home?
Not currently. Energy stats are supported on Home Assistant and SmartThings (with firmware v1.0.6+ via eWeLink App). Once Apple or Google update their platforms to include this feature, your device will support it automatically.
Use Cases: What Can You Actually Do With the Sonoff S61S Outdoor?
1. Smart garden irrigation
Connect your irrigation solenoid valve or water pump to the S61S Outdoor and automate watering schedules from the app. You can create time-based routines, weekday patterns, or trigger-based automations — and combine it with a soil moisture sensor via Home Assistant for truly smart watering.
2. Outdoor and decorative lighting
Control garden lights, pathway lighting, or seasonal decorative lights from anywhere. Set them to turn on at sunset and off at midnight, or use a lux sensor to activate them automatically when ambient light drops.
3. Outdoor device charging
Install it next to your e-bike, electric scooter, or any outdoor charging point. The overcharge protection feature automatically cuts power when the connected device reaches full charge, protecting battery health and reducing energy waste.
4. Garage and unheated outbuilding equipment
With an operating range down to -20°C, it handles garages and sheds where temperatures can be extreme. Ideal for controlling space heaters, power tools, ventilation fans, or any electrical equipment in non-climate-controlled spaces.
5. Terraces and pergolas
Fans, patio heaters, ambient lighting, outdoor speakers — all controllable by voice or app. Set schedules to match your outdoor lifestyle without touching a switch.
Energy Monitoring and Electrical Protections
The S61S Outdoor is more than a remote switch — it’s a full energy monitor. From the eWeLink app you can track in real time:
- Voltage of your mains supply
- Current drawn by the connected device
- Active power in watts
- Accumulated energy with daily, weekly, and monthly history
- Cost estimation in your local currency
Configurable overload protection
One of the most useful features is the ability to define your own safety thresholds. You can set custom cut-off limits for current, voltage, and power. When consumption exceeds your configured limit, the plug automatically disconnects, protecting both the connected appliance and your electrical installation.
This is particularly valuable for motors, irrigation pumps, and power tools where unexpected overloads are a real risk.
Setup and Configuration: Step by Step
- Plug it in to your outdoor socket. The LED will start blinking in pairing mode. If not, hold the button for 5 seconds until it blinks rapidly.
- Download eWeLink on your smartphone (iOS or Android).
- Add the device from the “+” menu and follow the on-screen instructions.
- Connect to your 2.4 GHz WiFi network (5 GHz is not supported).
- Matter pairing (optional): To add it to Apple Home, Google Home, Alexa, or Home Assistant, use the Matter pairing code available in the eWeLink app or on the device documentation. This step is independent — eWeLink and Matter can coexist.
Even if you plan to use it exclusively through your Matter platform, the initial eWeLink pairing is still required to generate the Matter QR/pairing code.
Price and Where to Buy
The Sonoff S61S Outdoor is priced at $19.90 USD on the official Sonoff store.
👉 Buy on the official Sonoff store
Discount code: Use AXLMSONOFF at checkout on the official Sonoff store to get 10% off any product in their catalog.
Verdict: Is It Worth It?
The Sonoff S61S Outdoor is, in my opinion, the most complete outdoor smart plug you can get at this price point. IP44 protection, Matter 1.4, full energy monitoring, and configurable electrical protections in a single device under $20 — that combination is hard to beat.
If you already use Sonoff devices indoors — the Mini R4, the S60 iPlug, or the NS Panel Pro — this plug slots seamlessly into the same ecosystem. And if your goal is a unified Matter home across brands, this is a plug-and-play addition with no friction.
Strengths:
- Real IP44 for permanent outdoor installation
- Native Matter 1.4 — no firmware hacks required
- Full energy monitoring with cost estimation
- Overload and overcharge protection
- Very competitive price for the outdoor Matter category
Room for improvement:
- Like any IP44-rated plug, this device requires an external weatherproof box when exposed directly to heavy rain.
Drop any questions in the comments below. And if this review helped, share it with anyone setting up their smart outdoor space.
Frequently Asked Questions About the Sonoff S61S Outdoor
Is the Sonoff S61S Outdoor waterproof? It carries an IP44 rating, which certifies protection against water splashes from any direction. For installations exposed to direct heavy rain, Sonoff recommends adding a certified outdoor weatherproof enclosure box around the connection point.
Does it need a hub to work with Matter? Yes. As a Matter over WiFi device, it requires a compatible Matter controller such as an Apple HomePod mini, Google Nest Hub (2nd gen), Amazon Echo (4th gen or later), or Home Assistant with the Matter integration active.
What is the maximum load for the Sonoff S61S Outdoor? It supports up to 16 A and 3,840 W of continuous load — sufficient for the vast majority of garden equipment, power tools, and outdoor appliances.
Can I monitor energy consumption from Apple Home or Google Home? Not currently. Energy stats are supported on Home Assistant and SmartThings (with firmware v1.0.6+ via eWeLink App). Once Apple or Google update their platforms to include this feature, your device will support it automatically.
Is it compatible with Home Assistant? Yes. It integrates natively with Home Assistant through the built-in Matter integration, with no additional add-ons required.
What is the difference between the Sonoff S61S Outdoor and the indoor S61STPF? The outdoor version adds an IP44 weather-resistance rating and a wider operating temperature range (-20°C to +50°C). Both share the same Matter 1.4 certification, 16A capacity, and energy monitoring features. The outdoor model costs approximately $10 more.
