1. Precision Detection with Scientific Alarm Thresholds
The sensor triggers alarms at different CO concentration levels following standard safety logic:
30 PPM: no alarm within 30 days (low safe level, long-term monitoring reminder)
70 PPM: alarm activates after 60–240 minutes
150 PPM: alarm activates after 10–50 minutes
400 PPM: alarm activates after 4–15 minutes
It gives progressive warning before toxic CO builds to lethal levels, helping you evacuate or ventilate in time.
2. Intuitive Visual Status Feedback
LCD Digital Display: shows real-time CO concentration (unit: PPM) directly for you to view gas level at a glance
3 color LED indicators:
Green (OPERATE): normal working status
Red (ALARM): dangerous CO concentration detected, alarm triggered
Yellow (FAULT): device malfunction reminder
Independent TEST button: perform manual system testing regularly to confirm the sensor, speaker and circuitry work properly
3. 85dB Loud Audible Alert
When carbon monoxide exceeds safety limits, the unit outputs piercing 85dB repeated beeping alarms. The loud sound can easily wake sleeping residents and spread across adjacent rooms to ensure everyone receives the hazard warning promptly.
4. Compact Battery-Powered & Easy Installation
Dimensions: diameter 9.6cm / 3.8 inch, thickness 3.1cm / 1.2 inch, compact to fit ceiling/wall mounting
Power supply: 2×AA batteries (batteries excluded from package, purchase separately); no hardwiring required, you can install it anywhere with battery supply
Built-in fault self-check: automatically inspect sensor performance, notify you via yellow fault LED when device needs maintenance or battery replacement
5. Wide Application Scenarios
Residential spaces: bedrooms, living rooms, kitchens with gas heaters/fireplaces
Utility areas: garages, boiler rooms, storage rooms with fuel-burning equipment
Mobile spaces: RVs, camping cabins, boats with generators or heating devices
Purchase Note
Sold per single piece; batteries are not included in product package.
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