Overview:
The Addressable Talkback Speaker System plays a vital role in facilitating communication during fire emergencies in multi-story buildings. Its primary function is to establish a communication link between building occupants and the rescue support team stationed in the control room.
Functional Description :
In the event of an emergency, occupants can initiate a call for assistance by pressing the call button. When this button is activated, the control panel will generate a distinctive ringtone to indicate the caller’s location. Support personnel can then accept the call and establish a two-way voice connection to facilitate communication.
Statutory Compliance:
Installation of the Addressable Talkback Speaker System is a mandatory requirement as per the National Building Code (NBC) 2016, specifically under Part 4, Clause 4.9 C.
Addressable Talkback Speaker
Model No:AD2S103
Microphone Feature :
The built-in microphone in the Talkback system is highly sensitive, capable of capturing the voices of distressed occupants even when they are standing and speaking from a distance of up to 5 feet from the unit.
Power and Communication Feature :
The Talkback system boasts an exclusive feature known as Airlight, which utilizes addressable, loop-powered, 2-wire technology for data transmission, power supply, and signaling.
PA Speaker Feature :
Furthermore, the Talkback speaker unit can independently function as an Addressable Public Address (PA) speaker for smaller areas. This eliminates the need for a separate PA speaker in many locations, as the Talkback speaker itself can effectively serve this dual purpose.
- Interactive TFT display with touch screen control.
- Two-wire system for power, data , forward and reverse audio signaling.
- Power supply management system.
- Password security.
- Event logging system.
- Short circuit Protection .
Notably, this control panels innovative design allows it to connect and control the Talkback Unit using just two wires for Power, data, Forward and Reverse Audio signaling. This ground-breaking feature significantly reduces cable requirements.
Regarding power supply, the control panel operates on 24 volts DC. It also includes a built-in 230 volts to 24 volts SMPS (Switched-Mode Power Supply) and a battery charger provision for batteries. Users have the flexibility to choose between the built-in power supply or connect it to an external 24-volt supply, as required.
To ensure system reliability, sustainability, and compliance, the Addressable Talkback system utilizes addressable technology, providing precise location identification and enabling interactive features between components.
Each loop can output up to 1.2 amps.
Devices come with factory-set software addresses based on the order specifications. If there is a need for address modifications, this can be done using the control panel.
Primary control panel is equipped with a single loop.
Incorporating Loop Cards:When the system necessitates more number of loop, we have the option to introduce loop expansion boards. Each loop expansion board can accommodate up to 3 loops. These loop cards are plug-and-play modules, and depending on the specific site requirements, multiple loop cards can be added to extend the panel’s capacity, allowing for a maximum of 4 loops.
The control panel logs all call and fault history events, aiding in performance assessment during normal days and emergencies.
Wiring and Short Circuit Isolator:
The system requires 2-core cable, simplifying connections between Talkback speakers and the control panel with the option for tee joints and tree wiring. A short circuit isolator monitors and detects overcurrent issues, isolating faulty circuits and notifying maintenance personnel for appropriate action.
Bill of Materials for the above Scheme
| S.NO | Item Description | Unit | Quantity |
| 1 | Control panel for addressable Talkback system with bulit in 2nos 12v 7Ah battery and charger | no | 1 |
| 2 | Addressable talkback speaker | no | 16 |
| 3 | Addressable short circuit isolator | no | 2 |
| 4 | 2×1.5 sq mm copper armoured cable | mtr | 90 |
