Clearer Communication, Safer Spaces: Introducing the Grandstream GSC3518HS SIP Horn Speaker

Clearer Communication, Safer Spaces: Introducing the Grandstream GSC3518HS SIP Horn Speaker

In today’s fast-paced environments from sprawling outdoor campuses to busy warehouses clear communication isn’t just a convenience, it’s a necessity. Whether it’s a routine announcement or a critical emergency alert, you need a system that ensures every word is heard.

As a proud partner of Grandstream, we are excited to introduce the latest powerhouse in facility management: the GSC3518HS SIP/Multicast Talk-Back Horn Speaker.

Why the GSC3518HS is a Game-Changer

The GSC3518HS isn't your average PA speaker. It is a rugged, high-fidelity communication hub designed to perform in the toughest conditions. Here is why we recommend it for our clients:

1. Unmatched Power and Clarity

Equipped with a 50-watt high-fidelity speaker, the GSC3518HS delivers a maximum volume of 126 dBA. This makes it the ideal solution for large outdoor areas like school playgrounds, parks, and shipping ports where background noise often drowns out standard speakers.

2. Two-Way "Talk-Back" Intelligence

Communication should be a two-way street. The GSC3518HS features three built-in microphones with an 8-meter pickup distance. Enhanced by AI-based background noise reduction, it allows for crystal-clear "talk-back" functionality. Security teams or administrators can not only broadcast messages but also hear what’s happening on the ground.

3. Built for the Elements

Outdoor hardware needs to be tough. With an IP66-rated waterproof and dustproof casing and a durable stainless steel bracket, this horn speaker is built to withstand rain, dust, and extreme temperatures without skipping a beat.

4. Seamless Integration

Because it supports SIP and Multicast paging, the GSC3518HS integrates perfectly with your existing VoIP phone system. It also supports:

  • PoE/PoE+/PoE++ for easy installation with a single cable.

  • Dual network ports (including a PoE output port to daisy-chain other devices).

  • Bluetooth and AirPlay support for versatile audio streaming.

Ideal Use Cases

  • Education: Instant alerts across campus and playgrounds.

  • Logistics: Clear instructions in noisy warehouses and loading docks.

  • Healthcare: Efficient paging in large hospital parking structures or grounds.

  • Public Spaces: Reliable public address systems for parks and transit hubs.

Get Started with Grandstream Today

As an authorized partner, we don’t just sell the hardware we help you design the communication solution that fits your unique infrastructure. The Grandstream GSC3518HS represents the gold standard in modern paging, combining durability with the smartest audio technology on the market.


Stay connected. Stay secure. Stay clear.

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