GS888A
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GS888A
Combination Alarm
Certified to the stringent ETL standards (UL217 10th Ed. and UL2034 5th Ed.), the GS888A utilizes highly accurate photoelectric and electrochemical sensors. It features a bilingual voice warning system (English/French) that clearly announces the specific danger, such as "Fire!" or "Warning, Carbon Monoxide." Powered by two easily replaceable AA alkaline batteries, it includes user-friendly functions like an 8-minute smoke silence, a 10-hour Do Not Disturb mode for low battery warnings, and an intuitive network pairing process, making it the ultimate smart safety solution for modern homes.
Bullet Points
Smart WiFi Connectivity
Connects directly to your home's 2.4GHz WiFi network, sending instant push notifications to your smartphone during an alarm or low battery event, keeping you informed from anywhere.
Digital LCD Display
Features an intuitive LCD screen that displays real-time carbon monoxide concentration levels (PPM), alarm icons, and system status codes for quick and easy monitoring.
Dual-Sensor Technology
Equipped with both an advanced photoelectric smoke sensor and an electrochemical carbon monoxide sensor, providing highly accurate detection of two deadly threats in a single unit.
Bilingual Voice Warning System
Features a built-in voice alert system that clearly announces the specific danger in either English or French, eliminating confusion during an emergency.
Intelligent Silence Modes
Easily hush nuisance alarms for 5 to 8 minutes, or activate a 10-hour "Do Not Disturb" mode for low battery warnings to ensure an uninterrupted night's sleep.
Certified Safety Standard
Rigorously tested and certified by ETL to meet the strict UL217 10th Edition and UL2034 5th Edition safety standards for maximum reliability.
Key Specifications
Power Source

DC 3V (2x AA Alkaline Batteries)

Battery Life1 Year
CommunicationWiFi (2.4GHz)
Wireless Range> 100m (Open Air)
Sensor TypePhotoelectric & Electrochemical
Product Lifetime10 Years
DisplayDigital LCD Screen
Alarm Volume≥ 85dB(A) at 10ft
Voice PromptsEnglish / French
Silence TimeSmoke: ~8 mins / CO: ~5 mins
Do Not Disturb (Low Battery/Fault)~10 Hours
Alarm Memory~72 Hours
Operating Temperature37°F to 104°F (3°C to 40°C)
Humidity Range25% to 95% RH (non-condensing)
DimensionsΦ 140.1mm x 42.25mm
WeightApprox. 270g
Certification StandardUL217 10th Ed. & UL2034 5th Ed., ULC 531 & CSA 6.19





Usage Scenarios
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Bedroom Safety
Ensure you wake up to danger with a loud 85dB voice alarm and wireless interconnection that sounds the alert even if the fire originates in another room.
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Living Area Protection
Safeguard your family's primary gathering space with dual-sensor protection, especially in homes with fireplaces or gas heating.
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Stay Connected Anywhere
Receive instant push notifications on your smartphone the moment smoke or CO is detected, ensuring peace of mind even when you're away.
Bedroom
Living Room
Remote Monitoring
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.

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