Indoor/Ceiling IP SIP Speaker with Flameproof rear cover

The SIP Ceiling Speaker AD633C is part of a series of TEMA speakers to be connected to a standard LAN for the PA (Public Address) paging of ads, speech and music, in offices, factories, public places.
The internal circuits incorporate a PoE (Power over Ethernet) power supply for direct power over the UTP cable, but also allow input from an external power supply at 230Vac / 12-24Vdc to extend the maximum sound power output. The two power supply types can coexist in order to increase the safety of the service.
AD633C is a two-way communication system with a built-in microphone with the dual local listening function and control of the speaker functionality.

Applications, Target

  • Companies, Offices, Factories, Warehouses, Industry
  • Warehouses, Garage, Supermarket, Parking
  • Public areas
  • Alarm and warning systems
  • Hospitals, Schools
  • Railway Stations, Airports, Ports

 Packing List

  • 1 IP VoIP SIP AD633C ceiling speaker
  • 1 Paper manual
  • 1 CD-ROM with complete documentation
  • 1 3 mt Patch Cord LAN UTP Cable for pre-installation test functions


Power Amplifier Technology

A high-efficiency and low-consumption double D-class amplifier can generate a maximum power of 12W (2x6W) at 8 ohms with high audio quality. The amplifier is self-protected against overloads and short circuits output power. There is a second auxiliary output that can be carried to a second passive speaker to better distribute the audio power or generate a 100V-6W PA line.

Pre-recorded messages

In the internal SD card are recorded sounds and messages for automatic or command sending onto speaker, also automatically at pre-set times.

iOS and Android APP

Free download APP are available for smartphones with operating systems iOS and Android. With these applications it is possible to operate with the IP speakers and launch announcements even from smartphones.

Integration with VoIP SIP phone systems

AD633C can be perfectly integrated with VoIP telephone systems (IP-PBX) with SIP protocol and can be registered as a regular VoIP phone or P2P (Peer to Peer) without a PBX.

Innovative features and performances

Technical features

LAN, protocols TCP/IP Network 10/100BaseTx, SIP 2.0
Grade of protection IP54
Power Supply PoE, Injector PoE or ext power supply
PoE 802.3af class 0 12,95W
External Power Supply (Opt.) 230Vac/12-24Vdc-1-2A
Security Password access, activity logs
Inputs from external alarm commands 1
Inputs for diversified call buttons 2
Contact rating of the 2 internal relays max 30Vdc – 1,5A
Technology IMX25 400MHz processor
Memory 256MB Ram, Micro-SD Flash 2GB
Housing material painted metal
Operating temperature from -20° to +55°C
Storage temperature from -20° to +65°C
Umidity up to 100%
Installation ceiling mount
Dimensions Diam. 220x160mm
Weight 1,8 Kg
Audio Amplifier “D” Class (10W PoE) 12W (Ext. Pow.)
Acoustic unit impedance 8 Ohm
Audio Bandwidth 80 – 20.000Hz
Acoustic pressure (SPL) 105 dB (1KHz at 1 meter)
Internal Microphone omnidirectional electret 30Hz-18KHz
Multicast Audio Streaming G711μ, G711a, G722, L16 16 / 44 kHz
Audio Communication Unidirectional and Bidirectional
Additional speakers 1 passive speaker 8 Ohm 6W
Messages/Sounds pre-recorded into the internal SD
Connection SIP Server (IPPBX) or P2P (Peer To Peer)
Smartphone APP iOS, Android
Acoustic signaling call tones, ads Ding-dong
Visual signaling Active call led
Programming user-friendly web interface and passwords
Origin entirely developed and manufactured in Italy
Warranty 2 years, possibility of extension (option)
Compatibility CE, ROHS



Switching Power Supply 220Vca/12Vcc-1,0A
DIN Switching Power Supply 220Vca/15Vcc-1,0A
PoE Injector 230Vac/ 48Vdc-12,95W
Power relay repeater 230Vac/16A – 4KW
Flash lights with light bulb Xenon or High Brightness LEDs. Ideal for be controlled by IP speaker relays SIP series AD630, with a call in progress they add a light signal to the acoustic signal
DIN transformer 100V-30W audio line
Audio signal isolation transformer, ideal for signal relaunch to remote amplifiers
Built-in/ceiling passive speaker 8 Ohm 12W with Transformer 12/6/3 W response 80Hz - 20KHz, Diameter 200x160 mm
Passive speakers 8 Ohm or 100V various power


Advanced software for complete management of all terminals and multi-zone microphone consoles
Smartphone APP
iOS, Android, Windows


02/2018Datasheet993 KB
05/2019Brochure3.88 MB
05/2019Application notes10.4 MB
09/2019Manual4.77 MB
09/2019Light indicators458 KB
03/2018AD600 Addendum292 KB