# Carbon monoxide detector Alecto COA3910 — electrochemical CO sensor, battery-powered, white, 110×78×37 mm

**URL:** https://aio.lv/en/product--alecto-4acoa3910--12104640
**Data updated:** 2026-03-20 09:54 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** Alecto
**Manufacturer code:** 4acoa3910
**EAN:** 8712412579624
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 25.20 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alecto-4acoa3910--12104640

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Alecto COA3910 is a battery-powered carbon monoxide (CO) detector with an electrochemical sensor designed for home use. It monitors indoor CO levels, shows battery level and status via LED indicators, and has a plastic housing in white. Compact dimensions (110×78×37 mm) make it suitable for mounting in living areas, bedrooms and kitchens to warn occupants of CO buildup.

## Long description

Alecto COA3910 is a battery-powered carbon monoxide detector designed for residential indoor use. The device uses an electrochemical CO sensor to monitor air for dangerous carbon monoxide levels and provides clear visual feedback with LED indicators that show status and battery level. Its compact white plastic housing (110×78×37 mm) allows flexible placement in living rooms, bedrooms and kitchens where CO accumulation is a risk.
Advantages
The electrochemical sensor offers accurate detection of low concentrations of carbon monoxide and stable performance over time. Battery power enables installation without wiring and allows placement where mains power is not available. The compact footprint and neutral white design integrate easily into home interiors. LED status indicators make it simple to check device condition and battery level at a glance.
Suitable for
 Homes with fuel-burning appliances (boilers, stoves, fireplaces)
 Apartments and rented accommodation where permanent wiring is not practical
 Bedrooms and living areas to warn occupants of CO buildup
 Kitchens and utility rooms near gas appliances
Key specifications
 Detection principle: electrochemical carbon monoxide sensor
 Power supply: battery-powered (replaceable batteries)
 Housing: white plastic
 Dimensions: 110 × 78 × 37 mm
 Visual indicators: LED status and battery level indicators
 Intended use: indoor residential CO monitoring
How to use
Mount the detector on a wall or place it on a stable surface at breathing height in the room to be monitored, avoiding enclosed corners and areas very close to windows or direct drafts. Insert the recommended batteries and check the LED indicators for normal operation and battery level. Test the unit according to the manufacturer's test procedure after installation and periodically thereafter to ensure the sensor and alarm circuits function correctly.
Usage recommendations
Install at least one carbon monoxide detector on each level of the home and close to sleeping areas. Replace batteries as indicated by the battery status LED or at regular intervals, and follow local guidance on detector placement and maintenance. Do not place the detector directly above fuel-burning appliances or in areas with high humidity or heavy dust accumulation, which can affect sensor performance.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.2 kg |
| Operating relative humidity (H-H) | 0 - 93 |
| Package weight | 240 g |
| Operating temperature (T-T) | -10 - 45 |
| Alarm decibels | 85 dB |
| Height | 78 mm |
| LED indicators | Status, Battery level |
| Width | 110 mm |
| Depth | 37 mm |
| Connectivity technology | Wireless |
| Product colour | White |
| Package depth | 150 mm |
| Package height | 120 mm |
| Package width | 40 mm |
| Manual | Yes |
| Housing material | Plastic |
| Mounting type | Surface-mounted |
| Detector type | Electrochemical detector |
| Power source type | Battery |
| Interconnectable | No |
| Built-in display | Yes |
| Best uses | Home |
| Detected gas types | Carbon monoxide (CO) |
| Battery included | Yes |

## FAQ

### How much does the Alecto COA3910 carbon monoxide detector cost, and is it available for purchase?

The price is 30.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Alecto products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Alecto service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Alecto COA3910 carbon monoxide detector?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/12104640/67655319_large.webp