EM Mini Gen4 Energy Meter
A meter the size of a matchbox that wires straight into the circuit. No clamp to fit, up to 16 A, and Matter on by default so it turns up in Apple Home, Google Home or Alexa without a bridge.
$34.95 inc GST In stock · ships today
Currently sold out.
Free shipping over $150 Order before 3pm Melbourne time on a weekday and it ships the same day.
30-day returns Unused items, easy online returns
3-year warranty Backed by Shelly
Everything you need to know
The sections below cover what this meter does, the jobs people put it on, the full specifications, and how warranty and returns work. If something's still unanswered, the questions at the bottom cover the common ones.
Product features
What this meter does
The EM Mini Gen4 measures in-line: the circuit runs through the meter, so there's no clamp to fit and nothing to position. That keeps it small and cheap, and it caps what it can watch at 16 A, or 3840 W at 240 volts. It's a meter and nothing else. There's no relay, so it reports rather than switches. Matter is on by default, and five presses of the button moves it to Zigbee instead.
- Wires in-line, no CT clamp needed
- Up to 16 A or 3840 W
- ±1% accuracy
- Matter by default, Zigbee optional
Ten days of history on the device
The meter keeps at least ten days of readings at one-minute resolution in its own storage. You can pull that back later without a cloud account holding it for you, and a dropout doesn't leave a hole in the record.
- At least 10 days at one-minute resolution
- Stored on the device, not in a cloud account
- Readable over the local API
Automations that don't need the internet
Schedules, timers and scenes run on the relay itself, not on a server overseas. Set lights for sunset, a towel rail for weekday mornings, or a fan to run down after the bathroom light goes off, and it all keeps working through an internet outage. There's no subscription, and the embedded web interface gives you full control from a browser on your own network.
- Schedules and scripts run on the device
- No cloud account required for local control
- Keeps working when the internet doesn't
What is a Shelly energy meter?
A Shelly energy meter measures the power a circuit is using. It shows how much that circuit is using right now, keeps a running total of how much it has used over time, and stores one-minute records on the meter itself. It does not turn anything on or off, so every switch and appliance on the circuit works exactly as it did before the meter went in. You see the numbers in the Shelly app, or in Home Assistant through its Shelly integration, with no Shelly account in the middle.
Power usage
See where the power goes
Clamp the mains where they land in the switchboard and you see what the whole house is using, right now and over time. Put a meter on a single circuit, like the hot water or the air conditioner, and you see what that one thing costs to run.
Automations
Switch a load off when it runs high
An automation can run when a circuit climbs past a figure you set, like turning a heater off during a high tariff window. The meter supplies the reading, and a relay or a contactor does the switching. The EM Gen3 and Pro EM-50 have a built-in output for driving a contactor.
Solar
Import and generation, separately
One channel on the mains and one on the solar circuit gives you what you imported and what your roof made, as two separate numbers. A single channel nets them together and hides both. The clamp reads the current in the cable, so the meter works the same whoever made the panels or the inverter.
Alerts
Know when something finishes or fails
When a circuit drops to nothing, whatever was running has finished, so an automation can tell you the washing machine is done. An old fridge or a pool pump drawing more than it used to is often the first sign it needs a service.
Getting started
1
Start with what you want to know Start here
One appliance, or the whole house? A single circuit you can reach in the wall is an EM Mini Gen4 job. The EM Gen3 clamps up to two circuits, or the mains of a single phase house. For something more substantial that lives in your switchboard, look at the Pro range, which clips onto the DIN rail.
2
Add more as you go Then
Each meter works independently, so you can start with a single circuit and add more as you need them. They don't need to match: mix models and generations, and they sit side by side in the Shelly app or Home Assistant.
What's in the box
- 1× Shelly EM Mini Gen4 energy meter
- Measures one circuit inline, up to 16 A. No clamp needed
Works with
Also works with
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Pairs with Amazon Alexa
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Pairs with Apple Home
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Pairs with Google Home
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Pairs with Home Assistant
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Pairs with SmartThings
Works with Matter
Also works with Matter, so it can join other Matter platforms as well as the ones above.
Connects over
On your Wi-Fi
Joins your home network, so you control it from the app with no hub or bridge.
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Wi-Fi
or
On your Zigbee network
Joins a Zigbee network you already run, like Home Assistant or SmartThings, instead of the Shelly app.
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Zigbee
Set up over Bluetooth
Used once, to get it onto your Wi-Fi.
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Bluetooth
Works offline
Keeps working on your home network when the internet is down.
Scripts
10
Give it jobs the app can't
Scripts add jobs the meter can't do with the Shelly app's schedules and actions alone, like acting on the weather forecast or sending an alert to your phone. Each one is a small program that runs on the meter itself: copy it, paste it into the device's script editor and press Start. It doesn't need a hub, a cloud account or a subscription.
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Energy Load shedding: switch an appliance off when the draw gets too high -
Energy Phone alert when today's power use passes your daily limit -
Energy What your home's standby power costs, reported every morning -
Energy What your power costs on a time-of-use tariff, worked out daily -
Notifications Phone alert when your mains voltage goes too high or too low -
Energy Track your peak demand on a demand tariff, with a daily report
Scripts are free; installing one takes about two minutes.
Specifications & Installation
Setup · 2:06
How to install it
Shelly's own step-by-step install, from isolating the power to fitting the clamp and wiring the meter in.
Watch setup videoNo specifications match.
Power
- Power
- Hardwired
- Standby power
- < 1 W
- Phases
- Single-phase
- Channels
- 1 channel
- Measured by
- In-line (direct)
- Max current per circuit
- 16 A Also available: Standard
- Accuracy (±)
- 1 %
- On-device history
- 10 days
- Relay output
- No
- Power supply
- * 110-240 V~
- External protection
- Tripping characteristic B or C, max. 16A max. rated current, min. 6 kA interrupting rating, energy limiting class 3
- Form
- In-wall
- Housing material
- Plastic
- Standard
- 802.11 b/g/n/ax
- Range (indoors)
- 30 metres
- RF band
- 2412 - 2472 МHz
- Max. RF power
- < 20 dBm
- Version
- 5.0
- Range (indoors)
- 10 metres
- RF band
- 2402 - 2480 MHz
- Max. RF power
- < 4 dBm
- Range (indoors)
- 100 metres
- Protocol
- 802.15.4
- RF bands
- 2400 to 2483.5 MHz
- Max. RF power
- < 20 dBm
- Operating temperature
- -20–40 °C
- Operating humidity
- 30–70 % RH
- Max altitude
- 2000 metres
- Size (HxWxD)
- 29x34x16 mm / 1.34x1.11x0.63 inch
- Weight
- 13 g / 0.46 oz
- Screw terminals max torque
- 0.4 Nm / 3.5 lbin
- Conductor cross section
- 0.5 to 4 mm² / 20 to 11 AWG (solid, stranded, and bootlace ferrules)
- Conductor stripped length
- 6 to 7 mm / 0.24 to 0.28 in
- Mounting
- Wall console
- Shell color
- White
- Terminals color
- Grey (Mouse Grey)
- Voltmeter (AC)
- 110-240 V~ 50/60 Hz
- Voltmeter accuracy
- ±1%
- Ammeter (AC)
- 0 - 16A
- Ammeter accuracy
- ±1%
- Power and energy meters
- * Active power * Active energy
- Measurement data storage
- At least 10 days of 1 min data resolution
- Data export
- CSV for PQ recorded values JSON format export through RPC
- Power measurement
- Yes
- Max. measurement voltage
- 240 V~
- Max. measurement current
- 16 A
- Max. measurement power
- 3840 W
- CPU
- ESP-Shelly-C68F
- Flash
- 8MB
- Schedules
- 20
- Webhooks (URL actions)
- 20 with 5 URLs per hook
- Scripting
- Yes
- MQTT
- Yes
- UDP
- Yes
- Advanced schedules
- Yes
- KVS (Key-Value Store)
- Yes
- SKU
- SHE-SNS-0001
- MPN
- S4EM-001PXCEU16
- Barcode
- 3800238070823
Wiring diagrams
Circuit overview
Active (supply)Neutral / 0 VSwitched load
In Australia, fixed 230 V wiring is licensed-electrician work. Use these diagrams to plan the job and brief your electrician.
Showing the whole circuit
What you can do with it
Find out what an appliance costs to run
A small meter behind the power point records every kilowatt-hour an appliance uses. Add your tariff and you can see what the heater, fridge or pool pump really costs. Control with any of
Get a phone alert when the washing is done
A small meter behind the washing machine's power point sees the power drop when the cycle ends and sends a notification to your phone. No new machine, and nothing changes about how you use it. Control with any of Common questions
Quick answers before you buy. We test this gear ourselves. Can't find yours? Ask our Melbourne team
This one wires in-line, so the circuit runs through it and it tops out at 16 A. The EM Gen3 reads through a clamp instead, handles up to 80 A, watches two circuits and has a dry contact relay. The Mini measures one circuit and switches nothing.
No. Its two output terminals are bridged internally, so they pass the circuit through rather than break it. It measures and reports only.
Yes. Matter is enabled by default, so it joins Apple Home, Google Home, Alexa or SmartThings directly with no bridge.
Press the button five times. The device switches from the Matter profile to Zigbee and stays in inclusion mode for three minutes while you add it to your hub.
Yes. The circuit passes through the meter, so a licensed electrician wires it in.
Shelly · EM Mini Gen4 Energy Meter