Grandstream GSC3518HS Outdoor 50 Watt 2 Way SIP Horn Speaker and Microphone, PoE++ or 24-48V DC In

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Grandstream GSC3518HS Outdoor 2 Way SIP Horn Speaker and Microphone, 50 Watt, PoE++ or 24-48V DC In.

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
Protocols/Standards SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, LLDP-MED, SIMPLE, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6, OpenVPN®
Voice Codecs and Capabilities G.711µ/a, G.722 (wide-band), G.726-32, iLBC, Opus, G.723, G.729A/B, in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, PLC, AJB, AGC, ANS
Telephony Features SIP Paging, Multicast Paging, Group Paging, Push-to-Talk (PTT), call-waiting with priority override
QoS Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
Security User and administrator level passwords, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access control, secure boot
Multi-language English, German, French, Spanish, Portuguese, Russian, and Chinese
Upgrade/Provisioning Firmware upgrade via TFTP, HTTP, HTTPS, or local HTTP upload, mass provisioning using GDMS, TR069, or AES encrypted XML configuration file
Network Interfaces 1x 10/100 Mbps port with integrated PoE/PoE+/PoE++ input, 1x 10/100 Mbps port with integrated PoE/PoE+ output
Auxiliary Port 2x 2-pin Switch-in input ports, 1x 2-pin Switch-out output port, 1x differential line in port, 1x differential line out port, 2x network ports, 1x DC24V-48V port, reset
Speaker 50W high-fidelity speaker, Frequency: 270Hz-13.2KHz, Sensitivity: Up to 109 dBA at 1m/1W(1 kHz)
Max SPL Up to 126dBA
Microphone 3 Built-in microphones with 26.25 feet (8m) pickup distance
Power & Green Energy Efficiency PoE++ Input, complies with IEEE 802.3bt standard, Class 8, Max power 71 Watt, Max Input voltage 57V; PoE+ Output, complies with IEEE 802.3at standard, Class 4, Max power 25 Watt, DC IN 24V/4A - 48V/2A
Ingress Protection IP66-rated, waterproof cable gland
Installation Type Wall Mount, Pole Mount
Temperature and Humidity Operation: -30°C to +60°C, Storage: -40°C to +60°C, Humidity: 10% to 90% Non-condensing
Physical Unit Dimensions: 324.6mm(L) x 285.3mm(W) x 204.3mm(H), Unit Weight: 2.870kg (with mounting kits), Package Weight: 3.913kg
Material PC + ABS (Polycarbonate-Acrylonitrile Butadiene Styrene), Aluminum back cover, Stainless steel mounting bracket
Compliance FCC, IC, CE, RCM
Protocols/Standards SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, LLDP-MED, SIMPLE, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6, OpenVPN®
Voice Codecs and Capabilities G.711µ/a, G.722 (wide-band), G.726-32, iLBC, Opus, G.723, G.729A/B, in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, PLC, AJB, AGC, ANS
Telephony Features SIP Paging, Multicast Paging, Group Paging, Push-to-Talk (PTT), call-waiting with priority override
QoS Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
Security User and administrator level passwords, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access control, secure boot
Multi-language English, German, French, Spanish, Portuguese, Russian, and Chinese
Upgrade/Provisioning Firmware upgrade via TFTP, HTTP, HTTPS, or local HTTP upload, mass provisioning using GDMS, TR069, or AES encrypted XML configuration file
Network Interfaces 1x 10/100 Mbps port with integrated PoE/PoE+/PoE++ input, 1x 10/100 Mbps port with integrated PoE/PoE+ output
Auxiliary Port 2x 2-pin Switch-in input ports, 1x 2-pin Switch-out output port, 1x differential line in port, 1x differential line out port, 2x network ports, 1x DC24V-48V port, reset
Speaker 50W high-fidelity speaker, Frequency: 270Hz-13.2KHz, Sensitivity: Up to 109 dBA at 1m/1W(1 kHz)
Max SPL Up to 126dBA
Microphone 3 Built-in microphones with 26.25 feet (8m) pickup distance
Power & Green Energy Efficiency PoE++ Input, complies with IEEE 802.3bt standard, Class 8, Max power 71 Watt, Max Input voltage 57V; PoE+ Output, complies with IEEE 802.3at standard, Class 4, Max power 25 Watt, DC IN 24V/4A - 48V/2A
Ingress Protection IP66-rated, waterproof cable gland
Installation Type Wall Mount, Pole Mount
Temperature and Humidity Operation: -30°C to +60°C, Storage: -40°C to +60°C, Humidity: 10% to 90% Non-condensing
Physical Unit Dimensions: 324.6mm(L) x 285.3mm(W) x 204.3mm(H), Unit Weight: 2.870kg (with mounting kits), Package Weight: 3.913kg
Material PC + ABS (Polycarbonate-Acrylonitrile Butadiene Styrene), Aluminum back cover, Stainless steel mounting bracket
Compliance FCC, IC, CE, RCM