Grandstream GSC3518HS SIP/Multicast Talk-Back Horn Outdoor Speaker

The Grandstream GSC3518HS is a robust outdoor horn speaker designed for demanding commercial and industrial applications. Built to deliver powerful audio performance and reliable two-way communication, this IP66-rated speaker combines exceptional durability with advanced telephony features for paging, broadcasting, and emergency notification systems.

Key Features and Benefits

• Powerful Audio Output: 50W high-fidelity speaker delivers up to 126dBA maximum sound pressure level, ensuring clear announcements across large outdoor areas
• Two-Way Communication: Three integrated microphones with AI noise reduction enable talk-back functionality with an 8-meter (26.25 feet) voice pickup distance
• Advanced Telephony Features: SIP Paging, Multicast Paging, Group Paging, Push-to-Talk (PTT), and call-waiting with priority override for flexible communication options
• Weather-Resistant Construction: IP66-rated waterproof and dustproof design with durable PC + ABS material, aluminum back cover, and stainless steel mounting bracket
• PoE++ Powered: IEEE 802.3bt Class 8 compliant with up to 71W power input, plus PoE+ passthrough output for daisy-chaining devices
• Crystal Clear HD Audio: Full-band and wide-band audio codec support including G.711, G.722, G.726-32, iLBC, Opus, G.723, and G.729A/B
• Intelligent Text-to-Speech: Built-in TTS support enables automated announcements and emergency notifications
• Versatile Connectivity: Dual 10/100 Mbps network ports, differential line in/out, switch inputs/outputs, and DC 24V-48V port for flexible installation
• Device Cascading: Connect multiple speakers together for expanded coverage areas
• Broad Compatibility: Works with Airplay, ONVIF, RTSP/HTTP streaming, local audio files, and mobile app playback

Professional-Grade Communication Solution

The GSC3518HS is engineered for businesses that require reliable outdoor communication systems. Whether you're managing a manufacturing facility, educational campus, parking lot, warehouse, or public venue, this horn speaker provides the audio clarity and range needed for effective announcements and emergency notifications. The AI-based background noise reduction ensures messages are intelligible even in noisy industrial environments, while the talk-back capability allows for two-way communication without additional equipment.

The device's SIP compatibility integrates seamlessly with VoIP phone systems and unified communications platforms, making it an ideal addition to existing business infrastructure. Priority override functionality ensures that emergency announcements take precedence, while multicast and group paging capabilities allow targeted messaging to specific zones or broadcast to all connected speakers simultaneously.

Technical Specifications

• Manufacturer: Grandstream
• Model: GSC3518HS
• Speaker Performance: 50W, 270Hz-13.2KHz frequency range, 109dBA sensitivity at 1m/1W (1kHz), up to 126dBA max SPL
• Microphone Array: 3 microphones with 26.25 feet (8m) pickup distance
• Audio Codecs: G.711µ/a, G.722 (wide-band), G.726-32, iLBC, Opus, G.723, G.729A/B, in-band and out-of-band DTMF
• Network Interfaces: 1x 10/100 Mbps port with PoE/PoE+/PoE++ input, 1x 10/100 Mbps port with PoE/PoE+ output
• Power: PoE++ IEEE 802.3bt Class 8 (max 71W input, 57V), PoE+ IEEE 802.3at Class 4 (max 25W output)
• Auxiliary Ports: 2x 2-pin switch-in inputs, 1x 2-pin switch-out output, 1x differential line in, 1x differential line out, 1x DC24V-48V port, reset button
• Durability Rating: IP66 waterproof and dustproof
• Construction Materials: PC + ABS body, aluminum back cover, stainless steel mounting bracket
• Dimensions: 11.23" x 12.78" x 8.04"
• Installation Options: Wall mount and pole mount

Included

• 1x GSC3518HS Horn Speaker
• 1x Mounting Kit
• 1x Quick Installation Guide

Optional Accessories

• Grandstream 24V Power Supply (S-24V-6.25A-PS)
• Mounting Accessories
• Grandstream GS-POE60W-MG

Why Buy from PC Liquidations

When you purchase the Grandstream GSC3518HS from us, you're backed by a company with over 30 years of industry leadership and a proven commitment to quality. Our dedicated sales representatives are available to help you select the right communication solution for your specific needs and ensure seamless integration with your existing infrastructure.

Every product comes with a comprehensive warranty, and we stand behind our offerings with a satisfaction guarantee. Whether you're outfitting a single location or deploying speakers across multiple sites, you can trust in our fast fulfillment process to get your equipment delivered when you need it. Upgrade your facility's communication capabilities with confidence today.