Shelly Plus Smoke Alarm smoke detector, main view

Shelly Plus Smoke Alarm: Wi-Fi smoke detector EN 14604

Regular price€56,25
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  • 4 in stock
  • Backordered, shipping soon

At Q-TECH, we apply the same clear rules for everyone: the law protects you, and when applied correctly, it protects us as well. By processing your purchase, you accept our General Terms and Conditions of Sale. If you are purchasing as a consumer (B2C), nothing stated herein limits the rights granted to you by mandatory law (RDL 1/2007, TRLGDCU): the 3-year legal warranty of conformity and the right of withdrawal under the terms and with the exceptions legally provided, which are detailed below. References to "B2B" apply only to businesses and professionals.

Your guarantees

  • Rights intact: 14 days of withdrawal from receipt for most products—subject to the legal exceptions you will see below, such as goods made to your specifications—and a 3-year legal warranty of conformity, under the terms of the TRLGDCU.
  • Conformity with the description: we guarantee that the equipment will correspond to the published technical description and what one could reasonably expect from it (arts. 115 et seq. TRLGDCU). Images and videos are for guidance only: the manufacturer may supply a more recent revision of the product or introduce minor aesthetic, packaging, or firmware changes, without this constituting a lack of conformity as long as the described characteristics and performance are maintained.
  • Traceability that also protects you: we document the condition, serial number, and seal of each piece of equipment upon shipment, and we video-record the opening of returns; this is your proof of the condition in which the goods were delivered.

Responsible use and your part

  • If you are thinking of returning it, keep it as you received it: without installing or activating it, with its seals, accessories, and packaging intact. This is how to ensure a full refund, without deductions.
  • Handling that exceeds inspection reduces value: handling the equipment beyond what is necessary to verify its nature and operation may result in a real, assessed, and case-by-case justified deduction (art. 108.2 TRLGDCU), never a fixed percentage. In particular: activating or registering the serial number, linking it to a manufacturer's account or app, circulating water through hydraulic equipment, unsealing probes, or installing software or consumables. Initial inspection of the product does not lead to a deduction.
  • The same item must be returned: withdrawal requires returning the supplied unit. Different equipment, or equipment with prior use, age, or wear prior to purchase, does not constitute a valid withdrawal.
  • Installation and cybersecurity, shared responsibility: this is technical hardware; you are responsible for correct installation, credentials, patches, and backups, while we deliver a compliant product. Q-TECH is not liable for damages resulting from poor installation, incorrect configuration, or omission of patches by the customer or third parties (in B2C, without prejudice to the legal warranty and liability for intent or negligence, arts. 86 and 130 TRLGDCU).
  • Delivery of bulky goods: delivery is made to the curb. B2C: transport risk is ours until physical delivery (art. 66 ter); we recommend noting visible damages on the delivery note and notifying us of breakages within 24-48 hours with photographs to activate the insurance. B2B: inspection and notation on the delivery note are mandatory; hidden damages must be reported within 24 hours (art. 366 CCom). Unjustified rejection or incorrect shipping information will entail the actual outbound and return costs (approx. €85-550 for heavy machinery).

Made to your measure (Advanced Pre-Assembly)

  • If your order includes equipment, racks, hydraulic assemblies, or technical rooms made or configured according to your specifications (permanent joints, custom cuts or wiring, parameterization, pressure testing), these are custom goods without the right of withdrawal from the conclusion of the contract (art. 103.c TRLGDCU; CJEU Case C-529/19), which is informed before purchasing and documented in the signed Order Note. A test you request without permanent modification retains your right of withdrawal, with only the actual loss of value caused by that test being deducted. Would you prefer to receive it tested, configured, and ready to connect, without assuming these risks? Contract our Advanced Pre-Assembly or the prior technical audit.

If you are purchasing as a business or professional (B2B)

  • The transaction is governed by the Commercial Code: firm sale, without the right of withdrawal; notification of defects within 4 days (apparent) / 30 days (hidden), arts. 336 and 342. Q-TECH acts as a distributor and excludes indirect damages, loss of profit, and data loss, limited to the price of the equipment, without prejudice to the manufacturer's commercial warranty.

Product warnings v1.0 · June 2026. Information summary; the complete and binding conditions are those published at q-tech.es.

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Shelly Plus Smoke Alarm: Wi-Fi photoelectric smoke detector with phone alerts

The Shelly Plus Smoke Alarm is a photoelectric smoke detector certified to DIN EN 14604 that sounds at over 85 dB and alerts your phone wherever you are. It runs on a battery, with no wiring, and connects over Wi-Fi with no gateway. At Q-Tech we place it and link it with the rest of your Shelly home automation.

Summary

TypeSmart photoelectric smoke detector
Brand and modelShelly Plus Smoke Alarm (SNSN-0031Z)
UseHomes: bedrooms, hallways and living room
StandardCertified to DIN EN 14604
ConnectivityWi-Fi 802.11 b/g/n; Bluetooth 4.2 for setup only
Power1 × 3 V CR123A battery; about 5 years with the original battery
Warranty3-year manufacturer warranty, according to Shelly's EU GARAN label
Q-Tech installationPlacement and setup of alerts and scenes by the on-site hourly Expert Technician

What is the Shelly Plus Smoke Alarm?

The Shelly Plus Smoke Alarm by Shelly is a ceiling smoke alarm with a photoelectric sensor, effective against slow fires that smoulder for hours without a flame, such as a cigarette on a sofa. As well as sounding, it sends the alert to the Shelly Smart Control app and can trigger other Shelly devices.

What problem does it solve?

A standard smoke alarm can only be heard inside the home. If nobody is there, nobody finds out. The Plus Smoke Alarm alerts your phone instantly and, with scenes, can switch on the lights or cut power to appliances with a Shelly relay.

Technical data

SensorPhotoelectric
Sound levelOver 85 dB
DimensionsØ 86 × 31 mm
Weight95 g
MountingCeiling
Battery1 × 3 V CR123A (CR17335); 5-year life
Device lifespan10 years
Wi-Fi802.11 b/g/n, range up to 30 m indoors
FunctionsTest, alarm hush, low battery warning, webhooks and MQTT
Operating temperature0 to 55 °C
Humidity30 to 95% RH

Data according to Shelly.

Models and data by variant

ModelEAN
Shelly Plus Smoke Alarm (single)3800235265642

Compatibility and limits

  • It does not detect carbon monoxide: smoke only. For smoke and carbon monoxide, see the UniFi SuperLink smoke and CO alarm.
  • No gateway needed: it connects directly to your Wi-Fi.
  • The alarms do not interconnect with each other by radio; they can be linked with scenes in the app.
  • Do not place it in the kitchen, next to showers or in draughts: it may cause false alarms.
  • It is a domestic detector: it does not replace a mandatory fire detection system in premises or buildings.

When this product is not the right choice

ProductWhen to choose itKey data
UniFi SuperLink smoke and COYou also need to detect carbon monoxide, for example with a boiler or fireplaceEN 14604 and EN 50291-1; needs a SuperLink gateway
Shelly GASYou want to detect butane, propane or natural gas leaksPlugs into 230 V

Frequently asked questions

Do I need a gateway?

No. It connects directly to your Wi-Fi network.

Does it detect carbon monoxide?

No. It only detects smoke.

How do I test it?

Press and hold the button for about 3 seconds: it beeps three times and the LED flashes three times, according to Shelly.

What is the delivery time?

It is in stock at our warehouse.

Can I install it myself?

Yes: it fixes to the ceiling with the included kit and is set up from the app.

Q-Tech installation and support

Our on-site hourly Expert Technician chooses where to place each alarm, connects it to your Wi-Fi and prepares the scenes, such as switching on the lights and cutting power to appliances if it goes off. For remote questions there is the technical call.

More devices in Shelly security, and enquiries on WhatsApp.

Documentation

Availability and lead times: this item is in stock at our warehouse. Occasionally, depending on the time of year, the stock update may contain an error. If no units are available when you place your order, we will order it urgently and inform you immediately of the updated delivery time.

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