Carbon monoxide (CO) gas detector FireAngel FA3820-EUX10 — electrochemical, battery 3V, surface-mounted, ABS housing, 125×67×33 mm

The FireAngel FA3820-EUX10 is a surface-mounted carbon monoxide (CO) gas detector designed for domestic environments. It uses an electrochemical sensor to monitor ambient CO concentration and provides audible and visual alerts when dangerous levels are detected. The unit is powered by a 3 V lithium battery, housed in a white ABS enclosure and measures 125 × 67 × 33 mm. The detector includes features such as a ventilate pre‑alarm, a sleep‑easy silencing function for battery alerts, and an intelligent sensitivity mode for fast reaction to rising CO levels.

Advantages

This CO detector employs an advanced electrochemical sensor calibrated and tested specifically for CO gas, ensuring accurate and stable detection. The ventilate pre‑alarm reduces the risk of CO build‑up by prompting occupants to ventilate early. Audible and prominent visual notifications provide clear warning in hazardous situations, while the sleep‑easy function allows temporary silencing of battery alerts for eight hours to prevent nuisance noise during replacement. The device also includes quiet test and memory functions and supports advanced diagnostics via a cable connection.

Suitable for

• Residential homes and apartments where fixed surface‑mounted CO monitoring is required
• Bedrooms, living rooms, corridors and other indoor spaces near fuel‑burning appliances
• Replacement of end‑of‑life CO‑9X alarms to maintain continuous CO protection

Key specifications

• Detection technology: electrochemical CO sensor
• Power source: 3 V lithium battery
• Housing material and colour: ABS, white
• Mounting type: surface‑mounted
• Dimensions: 125 × 67 × 33 mm
• Audible alarm: clear loud alert with prominent visual notification
• Functions: ventilate pre‑alarm, sleep‑easy silencing for battery alerts, quiet test, memory of previous alarm
• Sensitivity: intelligent algorithm that increases sensitivity when low level CO is detected to enable faster alerts

How to use

Install the detector on a wall or ceiling at the recommended height and location, away from direct drafts, windows and heat sources. Insert the supplied 3 V lithium battery and perform a test using the test/silence control to confirm audible and visual indicators function correctly. Maintain the detector by following routine tests and replacing the battery as indicated by the unit. If the ventilate pre‑alarm sounds, open windows and doors to ventilate the area and monitor the detector for any change; if the full alarm activates, leave the premises immediately and seek fresh air.

Usage recommendations

Position the detector in rooms containing fuel‑burning appliances or sleeping areas, check operation regularly using the quiet test function, respond promptly to pre‑alarm ventilate warnings, and replace batteries or the unit according to manufacturer guidance to ensure continuous protection.