Grandstream GSC3518HS Outdoor SIP Horn Speaker, 50 W Talk-Back, IP66

Overview

The Grandstream GSC3518HS is a loud outdoor horn speaker for announcements across school grounds, factories, car parks, ports and other open areas, with built-in microphones so an operator can hear the reply. It pairs a 50 W horn driver with three microphones, runs over the normal data network with power through the cable, and is sealed to IP66 for rain and dust.

Is it right for you?

• Suits outdoor and large-area public address: school grounds, campuses, factories, warehouses, car parks, ports, parks and hospitals, where a maximum of 126 dBA is needed to carry over noise or distance.
• Choose it for two-way use: three microphones with an 8 m pickup distance let the person on the ground talk back.
• For an indoor room or corridor, the GSC3516 is the indoor talk-back speaker; for ceiling paging, the GSC3506 V2.
• It needs an 802.3bt PoE++ switch port or injector, or a DC supply of 24 V 4 A to 48 V 2 A.

Key features

• 50 W speaker, 270 Hz to 13.2 kHz, sensitivity up to 109 dBA at 1 m and 1 W, maximum 126 dBA.
• Three microphones with an 8 m pickup distance, AI noise reduction and text-to-speech for typed announcements.
• PoE++ input (802.3bt Class 8, up to 71 W) and a second network port with PoE+ output (802.3at Class 4, 25 W) to power a nearby device such as a camera on the same pole.
• Two switch-in inputs, one switch-out output, and differential line in and line out for other audio equipment.
• AirPlay, ONVIF, RTSP and HTTP streaming, local audio files and mobile app playback, as well as SIP and multicast paging.
• IP66 rating with a waterproof cable gland; PC and ABS horn, aluminium back cover and stainless steel bracket.
• Operating range -30 to 60 °C.
• G.711, G.722, G.726-32, iLBC, Opus, G.723 and G.729A/B codecs.

What else you need

• Power: an 802.3bt PoE++ switch port or injector (Class 8, up to 71 W), or a DC supply of 24 V 4 A to 48 V 2 A.
• For SIP intercom: a SIP server or IP PBX such as a Grandstream UCM (Unified Communications Manager).
• An outdoor-rated network cable run to the pole or wall position.

Installation

An audio or network installer should fit it. It mounts on a wall or pole with the included stainless steel bracket and measures 324.6 x 285.3 x 204.3 mm, weighing 2.87 kg with the mount. Run the network cable through the waterproof cable gland, connect PoE++ or DC power, wire any switch inputs, outputs or line connections, and register the speaker to the phone system. A device on the same pole can be powered from the PoE+ output port.

Software and licences

Managed through GDMS (Grandstream Device Management System), TR-069 or the local web interface. SecureAccess app management is still to come.

Before you buy

• Needs PoE++ (802.3bt) or a 24 V 4 A to 48 V 2 A DC supply; a standard PoE+ port is not enough.
• SecureAccess app management is still to come.