Grandstream GSC3518HS SIP/Multicast Talk-Back IP Horn Speaker

The Grandstream GSC3518HS is an enterprise-grade, high-definition SIP multicast talk-back horn speaker designed to provide high-performance outdoor audio coverage and public address capabilities for commercial facilities. Built with a rugged, weather-resistant chassis, it is engineered to deliver crystal-clear communication and expanded security messaging across large industrial environments, warehouses, public spaces, and school campuses.

High-Power Audio & Clear Coverage

• Massive Output: Integrated 50W high-fidelity amplifier speaker delivering a maximum sound pressure level (SPL) of up to 126dBA for exceptional physical coverage.
• Two-Way Communication: Equipped with 3 built-in microphones supporting a 26.25-foot (8-meter) voice pickup radius for reliable talk-back functionality.
• Intelligent Audio Processing: Features advanced AI noise reduction, acoustic echo cancellation, and automatic gain control to maintain vocal clarity over background environmental noise.
• Wideband Audio Codecs: Full support for modern high-definition codecs including Opus and G.722, ensuring professional-grade voice quality.

Industrial & Scalable Hardware

• Ruggedized Enclosure: IP66-rated waterproof and dustproof protection with a sturdy stainless steel mounting bracket built to withstand harsh outdoor weather conditions.
• Power Cascading Logistics: Equipped with one network port featuring PoE/PoE+/PoE++ input, alongside a secondary network port providing PoE/PoE+ output for seamless device-to-device cascading scenarios.
• Flexible Auxiliary Interfaces: Features dual 2-pin Switch-in inputs, a 2-pin Switch-out output, plus differential LINE IN and LINE OUT connections for comprehensive physical hardware integration.
• Versatile Mounting: Commercially adaptable design that supports both reliable wall-mount and pole-mount deployment configurations.

Secure Commercial Paging Protocols

• Advanced Paging Layouts: Native support for standard SIP paging, multicast paging, group paging, and Push-to-Talk (PTT) workflows.
• Priority Management: Call-waiting capability with integrated priority override, ensuring critical security announcements always cut through standard system traffic.
• Broad Media Streaming: Fully compatible with AirPlay, ONVIF, and RTSP/HTTP streaming protocols, allowing for local audio file distribution and unified platform integration.
• Enterprise-Grade Protection: Secures device architecture via user and administrator access levels, 256-bit AES encrypted configuration files, TLS/SRTP media encryption, and an anti-hacking secure boot.

What’s Included in the Box of Grandstream GSC3518HS Speaker:

• GSC3518HS Horn Speaker
• Wall and Pole Mounting Kits
• Quick Installation Guide

For a full list of specifications, please refer to the Grandstream GSC3518HS Datasheet.