UC-4SC615 IP Horn Speaker

TOA's UC-4SC615 is an IP horn speaker that can be directly connected to an IP network as an endpoint device with a single network cable. Voice announcement and internal audio playback can be achieved through network.

Thanks to its powerful sound and IP66-compliant enclosure, the audio information can be clearly heard even in outdoor spaces. The UC-4SC615 supports various types of industrial standard network protocols and it can be a great option for VMS (Video Management System) and other network audio communication system integrations.

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  • Network speaker with pre-recorded audio file
  • SIP supported
  • Easy integration with VMS software
  • Back channel function applied for live announcement
  • Up to 10 Multicast ports assignable for zone paging without SIP server
  • Easy integration with existing SIP phone system
  • PoE/PoE+ compatible


UC-4SC615 Q 

Power Source

PoE+ (IEEE802.3at Class 4), PoE (IEEE802.3af Class 3)

Power Consumption

22 W (at PoE+ powered, rated output)

13 W (at PoE powered, rated output)

5 W (IEC62368-1)

Amplifier Rated Output

15 W (at PoE+ powered), 8 W (at PoE powered)


112 dB (1 W, 1 m) (500 Hz to 2.5 kHz, peak level)

Maximum Sound Pressure level

124 dB (at PoE+ powered, 15 W, 1 m) (500 Hz to 2.5 kHz, peak level)

121 dB (at PoE powered, 8 W, 1 m) (500 Hz to 2.5 kHz, peak level)

Frequency Response

280 Hz to 12.5 kHz

Audio Codec

PCMU (G.711u), PCMA (G.711a), G.722

Broadcasting Mode

SIP Broadcasting Mode: PCMU/PCMA/G.722

Multicast Broadcasting Mode: PCMU/PCMA/G.722, Max. 10 ports

VMS Broadcasting Mode: Audio Backchannel, PCMU

Internal Message Broadcasting Mode


Each broadcast mode can be assigned an order of priority using the Priority Setting function

Internal Messages

Max. 20 messages (Max. recording capacity: 80 MB)

Supported file formats

WAV file: 8/16/44.1/48 kHz sampling frequency, 8/16 bit, monaural/stereo

MP3 file: 32/44.1/48 kHz sampling frequency, 64 to 320 kbps, CBR/VBR, monaural/stereo

Repeat count: 1 to 10 times

Interval time: 0 to 30 sec

Trigger: Control Input or Remote API (HTTP)

Network I/F


Network Protocol


Control Input

1 channel, no-voltage make contact inputs, open voltage: 5 V DC, short-circuit current: 2 mA or less, removable terminal block (3 pins)

Control Output

1 channel, open collector output, withstand voltage: 30 V DC, control current: 10 mA or less, removable terminal block (3 pins)


LAN LINK/ACT (green), STATUS (orange)

Dust/Water Protection


Operating Temperature

–30 to +55 °C (–22 to +131 °F)

Operating Humidity

90%RH or less (no condensation)


Horn flare and body: Aluminum, off-white (RAL 9010 equivalent), paint

Reflector horn: ABS resin, off-white (RAL 9010 equivalent)

Rear cover: PC resin, off-white (RAL 9010 equivalent), paint

Bracket, screws and bolts: Stainless steel


222 (w) x 211 (h) x 276 (d) mm (8.74" x 8.31" x 10.87")


1.4 kg (3.09 lb)


Note: The design and specifications are subject to change without notice for improvement.