Carbon Monoxide Alarm
GS828-H04
GS828-H04
Carbon Monoxide Alarm
Featuring a clear digital LCD screen, the GS828-H04 displays real-time carbon monoxide concentration in PPM, refreshing every 40 seconds. The smart detector is designed with a 10-year product lifetime and includes a convenient End-of-Life warning. It offers multiple intelligent silence functions, including a 10-minute alarm mute, a 9-hour Do Not Disturb mode for low battery/faults, and a 72-hour pre-EOL silence. This ensures your sleep is never interrupted by non-emergency alerts. Certified to EN50291 standards, it provides peace of mind through both local and app-based protection.
Bullet Points
Key Specifications
| Power Source | DC 3V (2x 1.5V AA Batteries) |
| Battery Life | 1 Year |
| Communication | 2.4GHz Wi-Fi (Tuya Platform) |
| Sensor Type | Electrochemical CO Sensor |
| Product Lifetime | 10 Years |
| Display Type | Digital LCD Screen |
| Alarm Volume | ≥ 85dB(A) at 3 meters |
| Alarm Sensitivity | 30PPM: No alarm before 120 mins 50PPM: Alarm between 60-90 mins 100PPM: Alarm between 10-40 mins 300PPM: Alarm within 3 mins |
| Silence Time | 10 minutes |
| Low Battery/Fault DND | 9 Hours |
| Pre-EOL Silence Time | 72 Hours |
| Standby Current | ≤ 25uA (average) |
| Alarm Current | ≤ 50mA (average) |
| Operating Temperature | -10°C to +40°C |
| Humidity Range | 30% to 90% RH (non-condensing) |
| Dimensions | 120mm x 80mm x 37mm |
| Weight | Approx. 250g (with battery) |
| Certification Standard | EN50291 |
Usage Scenarios
Appliance Monitoring
Install near gas stoves, water heaters, or boilers to quickly detect any dangerous carbon monoxide leaks at the source, receiving alerts even when you are not home.
Bedroom Safety
Ensure a safe night's sleep with continuous CO monitoring and a 9-hour Do Not Disturb feature that prevents low battery chirps from waking you up.
Living Area Protection
Safeguard your family's primary gathering space, especially if you have a fireplace or gas heater, with real-time LCD readings and smartphone alerts.
Why Siterwell
With over a decade of expertise in IoT and safety technology, Siterwell partners with businesses worldwide to create smarter, safer living environments.
Backed by strong R&D capability, global certifications, and a 56,000 m² production base, we deliver both innovation and reliable large-scale manufacturing.
From award-winning designs to proven global delivery across Asia, Europe, and the US, we focus on building long-term partnerships that drive mutual growth and success.
