The GSC3518HS is a SIP/multicast talk-back horn speaker that provides crystal clear HD audio, a high-fidelity 50-Watt speaker, and IP66-rated water and dust protection. Ideal for outdoor
campuses, public spaces, large offices, school playgrounds, hospitals, parks, warehouses, and more,the GSC3518HS provides a powerful outdoor announcement solution that expands security and
communication. This high-powered SIP speaker includes 3 microphones, AI-based background noise reduction, and intelligent text-to-speech to ensure every word is heard clearly in talk-back scenarios.
The GSC3518HS supports PoE++ input and PoE+ output, catering to device cascading scenarios. Thanks to its’ modern industrial design and extensive features, the GSC3518HS is an ideal SIP
talk-back horn speaker for any setting, allowing users to easily build a powerful intercom, security, and public-address announcement solution.

• High-powered 50W speaker with maximum volume of 126 dBA, ideal for coverage of expansive outdoor areas
• 3 microphones, AI-based background noise reduction, and intelligent text-to-speech to ensure every word is heard clearly in talk-back scenarios
• Full-band and wide-band audio codec support, including Opus & G.722
• Includes differential LINE IN and LINE OUT connections
• Supports Airplay, ONVIF, RTSP/HTTP streaming, local audio files, and mobile app playback
• SIP paging, multicast paging, call waiting with priority override, and more
• One 10/100Mbps network port with PoE/PoE+/PoE++ input, and one 10/100Mbps network port with PoE/ PoE+ output
• IP66-rated waterproof and dustproof; includes a durable stainless steel bracket suitable for harsh outdoor environments