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Combination Alarm
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Product Overview
Key Specifications
Usage Scenarios
Why Siterwell
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GS790U-BLDT
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GS790U-BLDT
Combination Alarm
The GS790U-BLDT is a comprehensive combo alarm that provides dual protection against both smoke and rapid temperature increases. Utilizing the advanced Ultra Sensor for smoke and Class A1 heat detection (54°C - 65°C), it ensures rapid response to various fire types. A built-in 10-year lithium battery powers the device for its entire lifespan.
Bullet Points
Dual Hazard Protection
Combines advanced Ultra Sensor smoke detection with Class A1 heat detection (54°C - 65°C) in a single unit for comprehensive fire safety.
Wireless Interconnectivity
Supports wireless mutual reporting; when one alarm detects danger, all connected alarms throughout the house sound simultaneously for whole-home coverage.
Smart App Control
Connects via Bluetooth to allow for remote diagnostics, device status monitoring, and convenient one-touch alarm muting directly from your smartphone.
Sleep Easy & Quiet Test
Features a Sleep Easy mode to silence low battery warnings at night, and a Quiet Test function that performs self-checks at a lower volume to avoid startling residents.
10-Year Sealed Battery
Powered by a built-in lithium battery that provides up to 10 years of continuous protection without the need for battery replacements.
Key Specifications
Power SupplyBuilt-in DC 3V 10-Year Lithium Battery
Product Life10 Years
Wireless TechnologyBluetooth (BLE)
Alarm Volume85dB @ 3m
Dimension118mm x 49mm
Compliance StandardEN14604, BS 5446-2:2003



















Usage Scenarios
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Comprehensive Corridor Safety
Ideal for hallways connecting kitchens and bedrooms, providing dual detection to catch both fast-flaming and smoldering fires.
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Interconnected Safety
Perfect for large houses where interconnected combo alarms ensure everyone is alerted immediately to any fire threat.
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Advanced Smart Integration
Connects with your smart home gateway for remote monitoring, diagnostics, and app-based control, offering the ultimate smart safety experience.
Hallways
Whole Home
Smart Home
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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