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Ultimate Buying Guide
⚡ Best Shelly Devices
16 Shelly products for local-first smart homes: Gen4 relays with Wi-Fi, Zigbee and Matter, energy meters, plugs and dimmers, plus the battery-powered Shelly BLU Bluetooth sensor family.
✅ 16 Devices Reviewed
✅ Wi-Fi, BLE, Zigbee & Matter
✅ Home Assistant Favorite
✅ Honest Pros & Cons
Shelly is the favorite smart home brand of many Home Assistant users and electricians. Its tiny relays fit behind existing wall switches, work locally without the cloud, expose open APIs (HTTP, MQTT, WebSocket and scripting), and the latest Gen4 models speak Wi-Fi, Zigbee and Matter with Bluetooth built in. The Shelly BLU line adds battery-powered Bluetooth sensors and buttons, and many Gen3/Gen4 devices can act as BLU gateways.
This brand guide compares 16 Shelly devices on Amazon, grouped by job. It complements our BLE series (door and motion sensors, buttons, gateways) and our Zigbee coverage.
💡 Reality check before you buy: Shelly relays, dimmers and energy meters connect to mains voltage. Install them only if you’re qualified, follow local electrical codes, and use a licensed electrician where required. In North America, choose UL-listed “US” models where offered. Check that your switch box has a neutral wire if the device needs one, and match the relay’s current rating to your load. Some energy meters (like the Pro 3EM 3CT63) target 3-phase or non-US installations, so confirm the right version for your panel.
⚡ Quick Comparison: All 16 Shelly Devices
| Device | Category | Connectivity | Best For | Buy |
|---|
| 🥇 Shelly 1 Mini Gen4 | 1-ch relay, dry contact | Wi-Fi, Zigbee, Matter | Best Overall | Buy Here → |
| 🔀 Shelly 2PM Gen4 | 2-ch relay + metering | Wi-Fi, Zigbee, Matter | Two Circuits & Shutters | Buy Here → |
| 📊 Shelly 1PM Mini Gen4 | 1-ch relay + metering | Wi-Fi, Zigbee, Matter | Metered Switching | Buy Here → |
| 🚗 Shelly 1 Gen3 | Dry-contact relay | Wi-Fi, Matter | Garage Doors | Buy Here → |
| 🔋 Shelly PM Mini Gen3 | Power meter, 16 A | Wi-Fi | Circuit Monitoring | Buy Here → |
| 🏭 Shelly Pro 3EM | DIN-rail 3-phase meter | Wi-Fi + LAN | Whole-Home Energy | Buy Here → |
| 🔌 Shelly Plug US Gen4 | UL smart plug + metering | Wi-Fi, BLE, Zigbee, Matter | No-Wiring Option | Buy Here → |
| 💡 Shelly Dimmer Gen4 US | UL dimmer module | Wi-Fi, Zigbee, Matter | Smart Dimming | Buy Here → |
| 🎛️ Shelly i4 Gen3 | 4-input controller | Wi-Fi | Scene Switches | Buy Here → |
| 🌡️ Shelly H&T Gen3 | Temp/humidity display | Wi-Fi + Bluetooth | Wi-Fi Climate Sensor | Buy Here → |
| 🔵 Shelly BLU H&T ZB | Temp/humidity sensor | Bluetooth + Zigbee | Battery Climate Sensor | Buy Here → |
| 🚪 Shelly BLU Door/Window ZB | Contact sensor | Bluetooth + Zigbee | Entry Automations | Buy Here → |
| 🏃 Shelly BLU Motion ZB | Motion + light | Bluetooth + Zigbee | Motion Lighting | Buy Here → |
| 🔘 Shelly BLU RC Button 4 ZB | 4-button remote | Bluetooth + Zigbee | Scene Remote | Buy Here → |
| 📡 Shelly BLU Gateway | USB BLE gateway | Bluetooth→Wi-Fi | BLU Coverage | Buy Here → |
| 🌊 Shelly Flood Gen4 | Leak sensor + cable | Wi-Fi, Bluetooth, Zigbee | Leak Detection | Buy Here → |
Connectivity from each Amazon listing’s title. Tap Buy Here to see the live price.
🔍 Why Shelly, and How to Choose
🏠
Keep Your Switches
Shelly relays install behind existing wall switches, so your switches still work manually while the circuit becomes smart and automatable.
🔒
Local-First
Shelly devices run without the cloud and offer local HTTP, MQTT and scripting, which is why they’re a Home Assistant favorite. The Shelly app and cloud are optional.
📡
Pick a Protocol
Gen4 devices offer Wi-Fi, Zigbee or Matter. Use Zigbee for a mesh with your existing coordinator, Matter for Apple/Google/Alexa, or Wi-Fi for the full Shelly feature set.
📊
PM = Power Metering
Models with “PM” in the name measure energy on the switched circuit. Choose them for appliances you want to monitor, or a dedicated PM Mini or Pro 3EM for panels.
🔵
BLU Battery Devices
Shelly BLU sensors and buttons are battery-powered Bluetooth devices. A Shelly BLU Gateway, Gen3/Gen4 Shelly device or Home Assistant proxy brings them online; ZB versions can use Zigbee instead.
🏆 Detailed Reviews: All 16 Shelly Devices
🥇 BEST OVERALL
The Shelly 1 Mini Gen4 averages about 4.6 stars from 870+ ratings and shows why Shelly is so popular. It’s a compact single-channel relay rated 8 A with dry contacts, and it can run over Wi-Fi, Zigbee or Matter. Fit it behind a light switch, use it to smarten a small appliance, or wire the dry contacts to a garage door opener. Per the listing it works with Alexa, Google Home, SmartThings and Apple Home, and Home Assistant supports it locally.
✅ Pros- Wi-Fi, Zigbee or Matter
- Tiny; fits behind switches
- Dry contacts
- Local control
❌ Cons- Mains wiring required
- No power metering
🎯 Verdict: The most flexible smart relay.
👉 Check Price on Amazon →
🔀 BEST FOR TWO CIRCUITS
Shelly 2PM Gen4
⭐ 4.8/5 · Two Channels With Metering
3 Radios
WI-FI, ZIGBEE, MATTER
The highest-rated Shelly here, about 4.7 stars from 870+ ratings. The 2PM Gen4 controls two circuits with power metering on each, so one module handles a double switch, a light and fan, or motorized roller shutters and blinds (Shelly relays offer a cover mode). Like the 1 Mini, it runs over Wi-Fi, Zigbee or Matter and integrates with the major ecosystems.
✅ Pros- Two metered channels
- Shutter control
- Triple-protocol
- Top rating
❌ Cons- Larger than Mini
- Mains wiring required
🎯 Verdict: The best Shelly for shutters and double switches.
👉 Check Price on Amazon →
📊 METERED SWITCHING · ⭐ 4.7/53. Shelly 1PM Mini Gen4
1 channel + power metering · Wi-Fi, Zigbee, Matter · 462 ratings
Buy Here →
The 1 Mini’s sibling with power metering, so you can switch and monitor a heater, pump or appliance and build automations like “notify me when the washer finishes.” It averages about 4.6 stars from 462 ratings.
🎯 Verdict: Switch and measure in one tiny module.
🚗 GARAGE DOORS · ⭐ 4.7/54. Shelly 1 Gen3
Dry-contact relay · Wi-Fi & Matter · 1,300+ ratings
Buy Here →
A Wi-Fi and Matter relay with dry contacts, widely used to automate garage door openers remotely, as the listing highlights, as well as gates and low-voltage controls. It’s the most-reviewed relay here, about 4.6 stars from 1,300+ ratings.
🎯 Verdict: The classic garage-door hack.
🔋 CIRCUIT MONITORING · ⭐ 4.7/55. Shelly PM Mini Gen3
1-channel 16 A power meter · Wi-Fi · 1,400+ ratings
Buy Here →
A tiny power meter (no relay) for monitoring a circuit or appliance up to 16 A. The listing pitches preventive monitoring: spotting unusual consumption before an appliance fails. The most-reviewed Shelly meter, about 4.6 stars from 1,400+ ratings.
🎯 Verdict: Monitor without switching.
🏭 WHOLE-HOME ENERGY · ⭐ 4.5/56. Shelly Pro 3EM
DIN-rail 3-phase energy meter · Wi-Fi + LAN · 378 ratings
Buy Here →
A professional DIN-rail energy meter with current clamps for monitoring a whole panel, solar production or EV charging, with Wi-Fi and wired LAN. It’s popular as a Home Assistant Energy dashboard source. This 3CT63 version suits 3-phase installations; for North American split-phase panels, look at the Pro 3EM 120A v2. It averages about 4.4 stars from 378 ratings.
🎯 Verdict: Panel-level energy insight.
🔌 NO-WIRING OPTION · ⭐ 4.3/57. Shelly Plug US Gen4
UL · power metering · Wi-Fi, BLE, Zigbee, Matter · 204 ratings
Buy Here →
The easiest Shelly to install: a UL-certified smart plug with power metering and four radios (Wi-Fi, Bluetooth, Zigbee and Matter) per the title. It works with HomeKit, Google Home, Alexa and Home Assistant. It averages about 4.2 stars from 204 ratings; a 4-pack is sold.
🎯 Verdict: Shelly without an electrician.
💡 SMART DIMMING · ⭐ 4.3/58. Shelly Dimmer Gen4 US
UL · compact dimmer · Wi-Fi, Zigbee, Matter · 31 ratings
Buy Here →
A compact, UL-certified dimmer module that fits behind a switch for precise brightness control, now with Gen4’s Wi-Fi, Zigbee and Matter options. Confirm your bulbs are dimmable and compatible. Only 31 ratings so far (about 4.3 stars).
🎯 Verdict: Hidden smart dimming.
🎛️ SCENE SWITCHES · ⭐ 4.3/59. Shelly i4 Gen3
4 digital inputs · Wi-Fi · no hub · 153 ratings
Buy Here →
The i4 turns up to four ordinary wall switches or buttons into smart scene controllers: each press can trigger any automation, Shelly action or Home Assistant script. It’s perfect for a multi-gang scene panel. It averages about 4.3 stars from 153 ratings.
🎯 Verdict: Wired switches become scene buttons.
🌡️ WI-FI CLIMATE SENSOR · ⭐ 3.4/510. Shelly H&T Gen3
Temp/humidity display · Wi-Fi + Bluetooth · 1,800+ ratings
Buy Here →
A Wi-Fi and Bluetooth temperature and humidity sensor with a display, which connects directly to your network without a gateway. Reviews are mixed (about 3.4 stars from 1,800+ ratings); for a battery BLE option, the BLU H&T ZB below rates higher.
🎯 Verdict: A gateway-free climate sensor.
🔵 BATTERY CLIMATE SENSOR · ⭐ 4.4/511. Shelly BLU H&T ZB
Bluetooth + Zigbee · water/dust-resistant · 146 ratings
Buy Here →
A battery-powered temperature and humidity sensor that reports over Bluetooth to a Shelly gateway or Gen3/Gen4 device, or joins Zigbee. Pair it with a Shelly relay for thermostat-style heater or fan control. It averages about 4.4 stars from 146 ratings.
🎯 Verdict: The best Shelly climate sensor.
🚪 ENTRY AUTOMATIONS · ⭐ 4.5/512. Shelly BLU Door/Window ZB
Contact sensor · Bluetooth + Zigbee · 49 ratings
Buy Here →
A compact contact sensor for doors and windows, over Bluetooth or Zigbee. Use it to trigger welcome lighting through a Shelly relay or alerts in Home Assistant. It averages about 4.5 stars from 49 ratings.
🎯 Verdict: A flexible contact sensor.
🏃 MOTION LIGHTING · ⭐ 4.5/513. Shelly BLU Motion ZB
Motion + light sensor · Bluetooth + Zigbee · 70 ratings
Buy Here →
Detects motion and ambient light, so a Shelly relay or dimmer can light hallways and stairs only when it’s dark. Bluetooth or Zigbee. It averages about 4.5 stars from 70 ratings.
🎯 Verdict: Pairs perfectly with Shelly relays.
🔘 SCENE REMOTE · ⭐ 4.2/514. Shelly BLU RC Button 4 ZB
4 buttons · multi-click · Bluetooth + Zigbee · 25 ratings
Buy Here →
A four-button battery remote with multi-click actions, great for controlling blinds on a 2PM Gen4, light scenes or Home Assistant automations. It averages about 4.0 stars from 25 ratings.
🎯 Verdict: A wireless scene panel.
📡 BLU COVERAGE · ⭐ 4.5/515. Shelly BLU Gateway
USB-A Bluetooth-to-Wi-Fi dongle · 694 ratings
Buy Here →
Where you don’t have a Gen3/Gen4 Shelly nearby, this USB stick gateway relays BLU sensors and buttons to Wi-Fi. Plug it into any USB charger. It’s the most-reviewed BLU product, about 4.4 stars from 694 ratings.
🎯 Verdict: Extend BLU coverage anywhere.
🌊 LEAK DETECTION · ⭐ 4.2/516. Shelly Flood Gen4
Leak sensor cable · Wi-Fi, Bluetooth, Zigbee · 315 ratings
Buy Here →
A leak sensor with an extended sensing cable for water heaters, washers and sump areas. Gen4 adds Wi-Fi, Bluetooth and Zigbee options. Combine it with a Shelly relay driving a valve for automatic shutoff. It averages about 4.1 stars from 315 ratings.
🎯 Verdict: Leak alerts the Shelly way.
🛒 Shelly Projects by Room
💡
Smart lights, keep switches
1 Mini Gen4 or Dimmer Gen4 + BLU Motion.
🪟
Roller shutters
2PM Gen4 + BLU RC Button 4.
🚗
Garage door
1 Gen3 + BLU Door/Window for status.
⚡
Energy dashboard
Pro 3EM + PM Mini Gen3 on key circuits.
🌡️
DIY thermostat
BLU H&T ZB + 1PM Mini Gen4 on a heater.
💧
Leak protection
Flood Gen4 + relay-driven shutoff valve.
❓ Frequently Asked Questions
Gen3 or Gen4?
Gen4 adds Zigbee alongside Wi-Fi, Matter and Bluetooth, so it’s the more future-proof choice. Gen3 devices remain excellent and are often well reviewed; choose by the features and certifications you need.
Do Shelly devices need the cloud?
No. Each device has a local web interface and APIs, and Home Assistant controls Shelly locally. The Shelly cloud and app add remote access and convenience but are optional.
Can I use Shelly with Apple Home?
Yes, Matter-capable Gen3/Gen4 devices pair with Apple Home, Google Home, Alexa and SmartThings. Check each listing for Matter support.
Do I need a neutral wire?
Most Shelly relays need a neutral; some dimmers and specific models support no-neutral installs. Check the wiring diagram for your model and your switch box before buying.
How do Shelly BLU devices connect?
Through a Shelly BLU Gateway, a Gen3/Gen4 Shelly device acting as a BLU gateway, or Home Assistant’s Bluetooth integration via an adapter or ESP32 proxy. ZB versions can join a Zigbee network instead.
🏁 Final Verdict: Best Shelly Devices
The Shelly devices worth buying first:
🔋 Best Energy Monitor: Shelly PM Mini Gen3
Buy Here →Shelly is the go-to brand for local, hackable smart homes. Start with the Shelly 1 Mini Gen4 behind a light switch, use the 2PM Gen4 for shutters and double switches, the 1 Gen3 for garage doors, and PM models or the Pro 3EM for energy monitoring. Add Shelly BLU sensors and buttons for triggers, with a BLU Gateway or Gen3/Gen4 device bringing them online. Always respect electrical safety when wiring mains devices. For more, see our BLE series on Bluetooth gateways, door and motion sensors and buttons.
💬 What have you automated with Shelly? Share your favorite project in the comments below.
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