Grandstream SIP/Multicast Intercom Talk-Back Horn Speaker | GSC3518HS

The Grandstream GSC3518HS is a powerful SIP-enabled horn speaker designed for clear, high-volume paging and intercom communication in large indoor and outdoor environments. Featuring a 50W speaker with output up to 126 dBA, it ensures announcements remain clear even in noisy or open spaces such as warehouses, campuses, and public areas. Equipped with three built-in microphones and advanced noise reduction, the GSC3518HS supports reliable two-way talk-back communication. It offers SIP and multicast paging, priority-based announcements, and text-to-speech functionality for automated messaging. Dual network ports with PoE support simplify installation and allow for flexible deployment, while additional line-in and line-out connections enable integration with external audio systems. The device also supports streaming protocols for added versatility. Built with a durable IP66-rated enclosure, the GSC3518HS is designed to withstand harsh weather conditions, making it ideal for demanding environments requiring dependable, high-quality audio communication.