Product Library / Energy, Solar & EV

Research profile · last verified 2026-08-02

Shelly EM Mini Gen4

Compiled by SmartHomeWorkflow Research · Shelly · Energy, Solar & EV · ~$24.99 (Shelly's own US store price on 2026-08-02, read from the storefront's product data rather than its rendered page, which returns only a navigation shell to plain requests. $24.99 for the single listed variant, SKU 3800238070823, listed by 'Shelly USA' under product type 'Energy Meters' and published to the store on 2025-03-18. This is by a wide margin the cheapest energy device in this catalogue — an eighth of what the whole-home monitors beside it cost — and the price difference is a scope difference rather than a bargain: this is a compact 16-amp meter that measures one circuit, where the monitors it sits beside clamp onto the mains and measure the whole panel. Compare like for like before treating the gap as a saving.)

Exactly which product this is[2]

Model number
3800238070823
Generation
Gen4
Region this page covers
US
Also sold or listed as
Shelly EM Mini Gen4 · Shelly EM Mini Gen4 - Compact 16A Smart Energy Meter · EM Mini Gen4

“Not established” means we have not sourced that detail yet — not that the product has no model number, generation or regional variant. We publish the gap rather than filling it.

Compatibility

EcosystemSupportThe catch
Apple HomeInconclusiveWe researched this and the evidence doesn't settle it — the catch explains why[3]Unknown, and the reason is the same thing that makes this record interesting. The obvious Apple route for a device like this would be Matter, and Shelly's own store description claims Matter — but the CSA-IoT certificate for this exact product is Zigbee 3.0, and no Matter certificate exists for it or for any of Shelly's four certified energy meters. That is not us doubting the vendor on principle: the same database shows Shelly holding genuine Matter certificates for other products (Shelly 1 Mini Gen3, CSA25014MAT44902-24, and 1PM Mini Gen3, CSA25012MAT44900-24, both under the same filing company), so this company certifies Matter when it certifies Matter. Until the claim and the registry agree, this catalogue will not tell an Apple household that this device will appear in the Home app. Shelly names Apple nowhere at product level either — the only Apple reference found is shop-wide navigation furniture, which is not a claim about any individual device. The conflict is recorded in full in provenance.
Amazon AlexaInconclusiveWe researched this and the evidence doesn't settle it — the catch explains why[2]Unknown. The only Alexa evidence located is a shop-wide sentence on Shelly's US store — 'Shelly devices are compatible with Alexa, Google Home, Android, and iOS, allowing voice control through your assistant!' — which appears as site furniture rather than on this product's own data, and which describes a brand of several hundred products including relays and dimmers where voice control obviously means something different. This catalogue does not promote a shop-wide badge into a per-product claim; the same rule was applied to another vendor's store banner in this catalogue and it applies identically here. Note also what voice control would even mean on this device: it has no relay and cannot switch anything, so the only thing Alexa could offer is reading a number back to you, and nothing found documents that capability for this product.
Google HomeInconclusiveWe researched this and the evidence doesn't settle it — the catch explains why[2]Unknown, on identical grounds to the Alexa cell — the sole evidence is the same shop-wide compatibility sentence, which is store furniture rather than a product claim, and no Google-side documentation naming this meter was located. As with Alexa, it is worth being concrete about the ceiling: this is a measurement device with no relay, so there is nothing for a voice assistant to switch, and neither Google Home nor Alexa has an energy-meter device type that would let it report readings as a first-class thing.
SmartThingsInconclusiveWe researched this and the evidence doesn't settle it — the catch explains why[3]Unknown. Shelly names SmartThings nowhere, and no Samsung-side documentation naming this meter was located. This is the cell where the Matter discrepancy costs the most in principle, because SmartThings is the platform that supports the widest set of Matter energy device types — but this product's certificate is Zigbee, not Matter, so the Matter route this record cannot confirm is exactly the route that would have mattered here. The device does hold a genuine Zigbee 3.0 certificate (ZIG25332ZB332213-24, device type 'Energy meter'), and SmartThings hubs do speak Zigbee, but nobody on either side documents that pairing, and this catalogue does not construct a compatibility claim out of two protocols happening to match.
Home AssistantWorksWorks with this ecosystem[4]THE STRONGEST HOME ASSISTANT CELL IN THIS ENTIRE CATEGORY, AND THE ONLY LOCAL ONE. Home Assistant ships an official core shelly integration, introduced in 0.115, with IoT class LOCAL PUSH — and its documentation states the point without hedging: 'Integration is communicating directly with the device; cloud connection is not needed.' Local push also means readings arrive when they change rather than when a timer fires, which for an energy meter is the difference between watching your power and sampling it. Compare the rest of this subcategory: the whole-home monitors here reach Home Assistant either by cloud polling or through an unofficial community integration working against a private cloud API. This one is core, official, local, and needs no vendor account at all. The integration explicitly supports generation 2 and later devices, and this is a Gen4 product. Two honest limits: Home Assistant's documentation is written at brand level across a very large product range and does not enumerate this specific model, and the Shelly BLU sub-range is excluded (not relevant to this device). Neither limit touches the local-operation claim, which is stated plainly and is the reason to buy this thing.

? Inconclusive means we researched that ecosystem and the evidence doesn’t settle it — the catch says why, and the sources are listed below. It is a statement about the available evidence, never a verdict on the product. A Setup Check researches your exact setup where the official sources don’t answer.

Protocols: WIFI · BLUETOOTH · ZIGBEE[1][2][3][7]

Needs before it works: No hub, and this is the one product in this category where that answer is unqualified rather than technically-true-but-cloud-dependent. Home Assistant's own documentation for its core Shelly integration states that the 'Integration is communicating directly with the device; cloud connection is not needed' — so a Home Assistant household reaches this meter over the local network with nothing in between and no vendor account involved. The device also advertises Zigbee, which would let a Zigbee hub talk to it directly, and it holds a Zigbee certificate for that. Shelly's own copy describes 'local + cloud metering', so the cloud is an option here rather than a requirement, which inverts the arrangement on every other record in this subcategory.[4]

What it can do[4]

You can tell it to

None documented by the vendor

It reports

  • Energy reading

Listed capabilities are what we could establish from vendor documentation. An ability missing here is unestablished — not necessarily absent.

Subscription reality

✓ Works without a subscription: Yes.

Vendor account required: No — no vendor account is involved.[4]

No subscription, plan or fee appears in any Shelly surface read. Recorded as 'none' on that basis, with coreFunctionWithoutPlan 'unknown' rather than 'full' — this is an absence of any mention of paid tiers, not a vendor statement that everything is included, and this catalogue keeps that distinction. What can be said in the buyer's favour is stronger than the usual silence, and it is structural rather than promised: because the device is documented as working locally with no cloud connection needed, its core measuring function is not the kind of thing a vendor could put behind a tier later without changing the hardware's behaviour. A cloud service that is optional cannot be made mandatory by a pricing decision alone.

Maintenance reality[2][4]

The catch

Read the words 'no relay' before you buy. Shelly's own description calls this an 'ultra-compact 16A energy meter (no relay)', which means it measures a circuit and can never switch one. Shelly sells near-identical-looking products in the same family that do both, and at these prices it is genuinely easy to order the wrong one. Second, and just as important, this is a 16-amp single-circuit meter, not a whole-home monitor. The $24.99 price looks like it undercuts the $99–$199 monitors beside it in this category by an order of magnitude; it does not compete with them, because they clamp onto your mains and measure the whole panel while this measures one circuit. If you want to know what your house is doing, this is the wrong shape of product at any price. Third — and this is the one that would have made it onto the page otherwise — Shelly's own store description advertises 'Wi-Fi, Matter, Zigbee & Bluetooth', but the CSA-IoT certificate for this exact product is ZIG25332ZB332213-24, Zigbee 3.0, device type 'Energy meter', and no Matter certificate exists for it. Nor for any of Shelly's four certified energy meters. That is not a general suspicion of the vendor: the same database shows Shelly holding real Matter certificates for its Gen3 Mini switches, so the company certifies Matter when it has. Until the claim and the registry agree, do not buy this expecting it to appear in a Matter controller, and ask Shelly to name the certificate if that is what you are buying it for. Fourth, the cheap price is not the cost. This installs inside an electrical enclosure on a live circuit, and a $24.99 part fitted by an electrician is not a $24.99 project. Finally, the genuinely good news, and it is unusual enough to state plainly: this is the only product in this category that does not depend on a manufacturer's cloud. Home Assistant's official integration talks to it directly over your own network — 'cloud connection is not needed' — so unlike every whole-home monitor here, its core function survives the vendor going away. In a category whose history includes a monitor line discontinued last December and a charging network that went dark with nine days' notice, that is worth more than the feature list suggests.

Who it's for

The right buy for a Home Assistant household that wants to meter a specific circuit — a heat pump, a dryer, a workshop subpanel, an EV charger — locally, cheaply, and without a vendor account. It is the only product in this category with an official, core, LOCAL Home Assistant integration, and Home Assistant's own words are that no cloud connection is needed. At $24.99 you can meter several circuits for less than one whole-home monitor costs. It also suits anyone whose reason for buying is resilience rather than features: this device keeps working if Shelly stops answering the phone, which is not true of anything else here. It is the wrong product if you want to know what your whole house is using — that is a mains-clamp monitor's job, and this is a single 16-amp circuit meter. It is the wrong product if you want to switch anything, because it has no relay. It is the wrong product for an Apple, Alexa, Google or SmartThings household today: none of them is documented at product level, the only platform reference is a shop-wide banner, and the Matter claim that would open those doors is contradicted by this product's own Zigbee-only certificate. And it is the wrong product for anyone not comfortable paying an electrician, because the install is inside an enclosure on a live circuit and costs several times the device.

Sources & method

Numbered sources below back the facts marked with the matching number above. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →

  1. [1] kb.shelly.cloud/knowledge-base/shelly-em-mini-gen4 (read 2026-08-09): BLE gateway described as 'Bridge between your Shelly BLU devices and the wider Shelly ecosystem. It receives Bluetooth signals and sends them to the cloud or locally to another non-bluetooth device.' Bluetooth specifications: 'Protocol: 5.0', 'RF band: 2402 - 2480 MHz', 'Max RF power: < 4 dBm', 'Range: Up to 10 m indoors and 30 m outdoors'. Setup role: pressing and holding the control button for 5 seconds activates the device's access point and Bluetooth connection for configuration. Bluetooth listed as one of three connectivity options alongside Wi-Fi and Zigbee. — vendor-documentation research, verified 2026-08-09
    Backs: Protocols
  2. [2] Shelly USA store, EM Mini Gen4 product data — vendor structured-data research (Shopify product JSON; rendered pages return navigation shells), verified 2026-08-02
    Backs: Product identity, Price, Protocols, Maintenance, Market availability, Power source, Installation, Amazon Alexa compatibility, Google Home compatibility
  3. [3] CSA-IoT certified products database, keyword search — registry research (control-tested, internal and external controls), verified 2026-08-02
    Backs: Protocols, Apple Home compatibility, SmartThings compatibility
  4. [4] Home Assistant, Shelly integration documentation — counterparty documentation, verified 2026-08-02
    Backs: Home Assistant compatibility, Required hub or bridge, Maintenance, Capabilities, Service status, Works without the internet, Vendor account required
  5. [5] US Consumer Product Safety Commission, recall REST service — regulator-API research with control, verified 2026-08-02
    Backs: Service status
  6. [6] unrecorded — the migrated lifecycle.research stamp carried no source field — migrated hand stamp, verified 2026-08-02
    Backs: Research status
  7. [7] Matter Distributed Compliance Ledger, models for VID 5264 (Shelly), read 2026-08-22 via tools/dcl-lookup.mjs: 22 model(s) enumerated to pagination exhaustion (next_key terminated). The list carries Gen3 and Gen4 relays, plugs, dimmers, flood and presence sensors and wall displays — including 'Shelly 1PM Mini Gen4' and 'Shelly 1 Mini Gen4' — but NO energy-monitor 'EM' model of any generation. — registry-lookup (DCL enumeration by vendor ID, with known-positive control), verified 2026-08-22
    Backs: Protocols
  8. [8] SmartHomeWorkflow record maintenance (BQ-244 absence-marker blast-radius repair) — internal-review, verified 2026-08-27

Where sources disagree

Where two sources we consider reliable say different things, we publish both positions and what we recorded, rather than quietly picking one.

Protocols, Apple Home compatibility, SmartThings compatibility

  • Shelly USA store, EM Mini Gen4 product description (as of 2026-08-02): Describes the product as an 'ultra-compact 16A energy meter (no relay) with Wi-Fi, Matter, Zigbee & Bluetooth' — naming Matter as a supported protocol.
  • CSA-IoT certified products database (as of 2026-08-02): Lists 'Shelly EM Mini Gen4' with certificate ZIG25332ZB332213-24, technology Zigbee 3.0, device type 'Energy meter', filed by Shelly Europe Ltd. No Matter certificate exists for this product, nor for any of Shelly's four certified energy meters, while the same company does hold Matter certificates for its Gen3 Mini switches.

We publish: unknown

We record the Matter claim as unproven rather than either repeating it or calling it false, and the middle position is the honest one here. It is not false in the sense of being obviously invented: Shelly is a real Matter participant with real Matter certificates in the same database under the same filing company, so the claim is at least plausible and may describe a planned firmware, a variant, or a certification in progress. But it is not something a buyer can rely on either, because the certificate that would make this device work in a Matter controller does not exist for this product, and a stablemate's certificate never transfers. So `matter` stays out of the protocols array, the Apple and SmartThings cells stay unknown rather than being opened by a route nobody can verify, and the record tells a buyer to ask Shelly to name the certificate before paying for Matter. The asymmetry of the two errors decides it: recording Matter and being wrong sends someone to buy a device that will not appear in their Home app, while withholding it costs a correctly-certified product one cell until the registry catches up.

Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.

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