Indoor/Ceiling IP SIP Speaker

The SIP Ceiling Speaker AD633 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

AD633 is a two-way communication system with a built-in microphone with the dual local listening function and control of the speaker functionality.

Applications and Target

Power Amplifier Technology

A double Class "D" Amplifier with high efficiency and low consumption can generate a maximum output power of 12W (2x6W) 8 ohms with high sound quality.

iOS and Android APP

The APPs for smartphones with iOS and Android operating systems are available for free download. With these applications it is possible to operate the IP loudspeakers on the network and launch announcements even from smartphones.

Integration with VoIP SIP phone systems

AD633 can be perfectly integrated with VoIP telephone systems (IPPBX) with SIP protocol and can be registered as a regular VoIP phone or P2P (Peer to Peer) without a PBX.

Special applications

Remote alerts for intruder deterrence, automated emergency messages, notifications to security staff for requests for help and immediate interventions.

Innovative features and performance

Technical features

LAN, protocols TCP/IP Network 10/100BaseTx, SIP 2.0
Grade of protection IP20
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. 200x92mm
Weight 1,1 Kg
Audio Amplifier “D” Class (10W PoE) 12W (Ext. Pow.)
Acoustic unit impedance 8 Ohm
Audio Bandwidth 80 – 15000Hz
Acoustic pressure (SPL) 102 dB A (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
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
entirely developed and manufactured in Italy
2 years, possibility of extension (option)

Optionals and Software


Switching Power Supply 220Vca/12Vcc-1,0A


Power relay repeater 230Vac/16A – 4KW


PoE Injector 230Vac/ 48Vdc-12,95W


DIN Switching Power Supply 220Vca/15Vcc-1,0A


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


Flash lights with light bulb Xenon or High Brightness LEDs

AD696/CT4 - CT8

PoE console with cardioid electret microphone for SIP and Multicast calls, 12-28 Zones


Advanced software for complete management of all terminals and multi-zone microphone consoles

Smartphone App

iOS, Android, Windows

Device Scan

Portable software to search for all Tema systems on the network, with display of the IP ad-dress, MAC address, serial number S/N, device name, description. It is possible to quickly change the IP address and Subnet Mask or set the system in DHCP.