Grandstream GSC3518HS SIP/multicast talk-back horn speaker, up to 126 dBA with a 50W speaker, IP66-rated weatherproofing, and advanced AI noise reduc | GSC3518HS

Grandstream GSC3518HS is a rugged SIP/multicast talk-back horn speaker designed for large indoor and outdoor venues, delivering up to 126 dBA with a 50W speaker, IP66-rated weatherproofing, and advanced AI noise reduction for crystal-clear communication. It’s ideal for schools, hospitals, warehouses, parks, and public spaces where powerful announcements and two-way communication are needed.

Key Features
– High-Power Audio
– 50W high-fidelity speaker
– Loudness up to 126 dBA for wide coverage
– Crystal-clear HD audio output

– Durability Protection
– IP66-rated dust and water resistance
– Stainless steel housing for extreme weather conditions
– Suitable for outdoor environments like playgrounds, parks, and warehouses

– Smart Communication
– SIP and multicast support for integration with VoIP systems
– Talk-back functionality with 3 built-in microphones
– AI-based noise reduction for clear communication even in noisy environments
– Intelligent text-to-speech capability

– Power Connectivity
– PoE++ input and PoE+ output for device cascading
– Easy integration into existing network infrastructure

– Design
– Modern industrial look
– Sturdy mounting bracket for reliable installation

Product Last Updated: 24/09/2026

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