# Gas Detector FireAngel FA3820-EUX10 Carbon Monoxide CO Electrochemical

**URL:** https://aio.lv/en/product--fireangel-fa-3820-eux10--6224831
**Data updated:** 2026-02-23 13:20 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** FireAngel
**Manufacturer code:** FA-3820-EUX10
**EAN:** 0816317006020
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The FireAngel FA3820-EUX10 is a carbon monoxide gas detector designed for home use. It features an electrochemical detection method, ensuring accurate readings. The device is powered by a 3V lithium battery and is surface-mounted for easy installation. With dimensions of 125mm width, 33mm depth, and 67mm height, it is compact and unobtrusive.

## Long description

The FireAngel FA3820-EUX10 Carbon Monoxide CO Electrochemical detector is a compact, surface-mounted alarm designed for domestic environments. It uses an electrochemical sensor to detect carbon monoxide and is powered by a 3V lithium battery. Measuring 125mm wide, 33mm deep and 67mm high, the unit is small enough to install on walls or ceilings without being obtrusive. The device includes a clear, loud alarm and BSI Kitemark approvals and replaces earlier end-of-life CO-9X models.
Advantages
The electrochemical sensing method provides accurate CO measurement with low drift over time and reliable response to hazardous concentrations. A ventilate pre-alarm prompts users to open windows before dangerous levels develop, helping to reduce the risk of carbon monoxide poisoning. The alarm features a Sleep Easy function that silences low-battery alerts for eight hours to allow time for replacement without repeated nuisance sounds. Intelligent sensing can switch the device to a high sensitivity mode if it detects CO levels likely to rise rapidly, enabling faster warning when concentrations approach 180 ppm.
Suitable for
 Homes with fuel-burning appliances such as gas boilers, fires, stoves or heaters
 Garages or workshops where engines or fuel-burning equipment are used
 Holiday homes and caravans requiring compact, battery-operated CO protection
 Rooms where surface-mounted installation is preferred or where ceiling access is limited
Key specifications
 Detection technology: electrochemical carbon monoxide sensor
 Power source: 3V lithium battery
 Mounting: surface-mounted (wall or ceiling)
 Dimensions: 125 mm (width) × 33 mm (depth) × 67 mm (height)
 Audible alarm: clear, loud alarm output suitable for domestic settings
 Pre-alarm ventilate warning and high sensitivity mode for fast reaction to rising CO levels
 Silence function: Sleep Easy battery alert silence for 8 hours
 Standards: BSI Kitemark approved
How to use
Install the FireAngel FA3820-EUX10 on a wall or ceiling following the manufacturer’s mounting instructions so the sensor is positioned where CO is most likely to accumulate, away from direct cooking fumes or steam. Activate the battery and test the alarm using the test button to verify correct operation. Regularly check the device status indicators and replace the unit’s battery according to the manufacturer’s guidance or when the low-battery alert is activated. Do not paint the unit or block the sensor openings.
Usage recommendations
Place at least one CO alarm on every level of the home and close to sleeping areas. Avoid installing directly above or beside fuel-burning appliances; instead fit the detector at breathing height in rooms where CO may accumulate. Periodically test the alarm, replace batteries when indicated, and follow ventilation advice if the pre-alarm triggers. Replace the detector at the end of its service life as specified by the manufacturer.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.095 kg |
| Certification | BS EN 50291-1:2018, BS EN 50291-2:2019 |
| Battery technology | Lithium |
| Operating relative humidity (H-H) | 30 - 90 |
| Storage temperature (T-T) | -20 - 50 |
| Operating temperature (T-T) | -10 - 40 |
| Storage relative humidity (H-H) | 30 - 90 |
| Alarm decibels | 85 dB |
| Height | 67 mm |
| LED indicators | Y |
| Width | 125 mm |
| Depth | 33 mm |
| Connectivity technology | Wireless |
| Product colour | White |
| Battery life | 10 year(s) |
| Manual | Yes |
| Battery voltage | 3 V |
| Housing material | Acrylonitrile butadiene styrene (ABS) |
| Mounting type | Surface-mounted |
| Detector type | Electrochemical detector |
| Power source type | DC, Battery |
| Test button | Yes |
| Quantity per pack | 1 pc(s) |
| Best uses | Home |
| Detected gas types | Carbon monoxide (CO) |
| Alarm mute | Yes |
| Sustainability compliance | Yes |
| Sustainability certificates | WEEE, UKCA, CE |
| Warranty period | 5 year(s) |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 FireAngel 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 FireAngel 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

## Image

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