IP Paging

GSC3518HS Outdoor SIP Horn Speaker

50W IP66 Outdoor Horn Speaker with Talk-Back

The Grandstream GSC3518HS is a SIP and multicast talk-back horn speaker that provides crystal clear HD audio through a high-fidelity 50-Watt speaker with IP66-rated water and dust protection. Built for outdoor campuses, public spaces, large offices, school playgrounds, hospitals, car parks and industrial sites, it delivers announcements and emergency notification over long distances while supporting two-way talk-back for intercom communication.

  • 50W Horn Speaker — Long-throw output
  • IP66 Rated — Water and dust protected
  • Talk-Back Capable — Two-way communication
  • SIP & Multicast — Site-wide paging
Download datasheet
Supplied by Cohesive Technologies, authorised distributor
Horn Speaker
50W
Weatherproof
IP66
Talk-Back
2-Way
Rated
Outdoor

Overview

The GSC3518HS is designed for open outdoor areas where an indoor ceiling speaker would never be heard.

The GSC3518HS is designed for outdoor campuses, public spaces, large offices, school playgrounds, hospitals, car parks, warehouses and industrial sites where announcements need to carry over long distances.

Features

  • High-Fidelity 50W Horn Speaker — A 50-Watt horn design projects announcements across playgrounds, car parks, yards and campuses
  • IP66 Water and Dust Protection — IP66 rating means the speaker withstands rain, dust and harsh outdoor conditions year-round
  • Talk-Back Functionality — Two-way talk-back allows staff to hold a conversation as well as broadcast announcements
  • Crystal-Clear HD Audio — HD audio reproduction keeps emergency and routine announcements intelligible outdoors
  • SIP and Multicast Paging — Register to your SIP phone system or join multicast paging zones for site-wide notification
  • Network Powered — Power over Ethernet keeps outdoor installations to a single cable run per speaker
  • Emergency Notification — Ideal for mass notification and emergency alerting across large outdoor and industrial areas
  • Free GDMS Management — Provision, monitor and maintain outdoor speakers centrally through GDMS

GSC3518HS FAQ

Answers to common questions about the GSC3518HS — buying it in India, documentation and support.

What is the GSC3518HS?

The Grandstream GSC3518HS is a SIP and multicast talk-back horn speaker that provides crystal clear HD audio through a high-fidelity 50-Watt speaker with IP66-rated water and dust protection. Built for outdoor campuses, public spaces, large offices, school playgrounds, hospitals, car parks and industrial sites, it delivers announcements and emergency notification over long distances while supporting two-way talk-back for intercom communication.

What are the key features of the GSC3518HS?

Key features of the GSC3518HS include: High-Fidelity 50W Horn Speaker; IP66 Water and Dust Protection; Talk-Back Functionality; Crystal-Clear HD Audio; SIP and Multicast Paging; Network Powered.

Where can I buy the GSC3518HS in India?

Cohesive Technologies is the authorised distributor of Grandstream Networks in India and supplies the GSC3518HS across the country. Call +91 120 4830000, WhatsApp +91 7290000544 or email info@grandstreamindia.com for a quote.

Where can I download the GSC3518HS datasheet?

You can download the official GSC3518HS datasheet (PDF). It lists the full technical specifications.

Is installation and support available for the GSC3518HS?

Yes. Cohesive Technologies offers consultation, installation, configuration, technical support and extended warranty for Grandstream products across India. See our support services.

Where is the GSC3518HS typically installed?

It is designed for outdoor campuses, public spaces, large offices, school playgrounds, hospitals, car parks, warehouses and industrial sites where announcements need to carry over long distances.

Is the GSC3518HS weatherproof?

Yes. It carries an IP66 rating for water and dust protection, so it is suitable for permanent outdoor installation in demanding conditions.

Does the GSC3518HS support two-way communication?

Yes. It is a talk-back horn speaker, so in addition to broadcasting announcements it supports two-way voice communication for intercom use.

How does the GSC3518HS compare with the indoor GSC speakers?

The indoor GSC3505, GSC3506, GSC3510 and GSC3516 use cabinet-style speakers rated from 8W to 30W. The GSC3518HS uses a 50W horn design with IP66 weatherproofing specifically for outdoor long-throw coverage.

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