Agni Veiga Series Intelligent Addressable Analog Photothermal Detector (Multi-Criteria)

The Agni Intelligent Addressable Analog Photothermal Detector combines advanced smoke and heat sensing with intelligent algorithms to deliver early fire detection while minimizing false alarms, making it ideal for critical and complex environments. 

Description

The Agni Veiga Series Intelligent Analog Photothermal Detector is a multi-criteria point detection device designed to provide reliable and early fire warnings by continuously monitoring both airborne smoke and temperature variations within the protected area. 

This detector integrates photoelectric smoke sensing with thermal detection (fixed temperature and rate-of-rise), allowing it to respond quickly to a wide range of fire conditions while maintaining excellent immunity to false alarms. Intelligent algorithms analyze data from both sensing elements to ensure genuine alarm activation without compromising safety. 
Built with a Dust Restrictor Chamber (DRC), the detector offers enhanced protection against airborne contaminants, improving long-term stability and performance. The low-profile design blends seamlessly into modern interiors, while high-visibility LEDs provide a full 360-degree status indication. 

The detector communicates via AGNI’s fully digital intelligent communication protocol and supports auto-addressing on compatible fire alarm control panels. It is fully compliant with EN54 standards and designed in accordance with IS 2189 installation practices, making it suitable for commercial, industrial, and institutional fire alarm systems.

Job to be Done

Primary Job

When designing or upgrading a fire alarm system, I need a detector that can identify real fire conditions early, so occupants can evacuate safely and emergency response can begin without delay.

Safety Job

Help occupants feel confident and guided during emergency. Give facility managers peace of mind through and follow standard SOP.

Functional Jobs

Detect both smoke and heat from different types of fires, Minimize false alarms caused by dust, steam, or minor temperature changes, Identify the exact device location in case of an alarm.

How it Works

How does the Agni Veiga Intelligent Analog Photothermal Detector Work?

The Agni Veiga Series Intelligent Analog Photothermal Detector operates using a multi-criteria fire detection approach, combining photoelectric smoke sensing with thermal monitoring to identify fire conditions accurately and at an early stage.

Application & Solution

  • Office buildings 
  • Commercial Facilities 
  • Electrical and equipment rooms 
  • Industrial and institutional environments

Application & Solution

  • Office buildings 
  • Commercial Facilities 
  • Electrical and equipment rooms 
  • Industrial and institutional environments

How does the Agni Veiga Sounder / Horn Cum Strobbe Work?

1. Continuous Air & Temperature Sampling

The detector continuously monitors the surrounding environment by sampling airborne particles and ambient temperature within its sensing chamber.

2. Smoke Detection via Photoelectric Sensor

When smoke enters the chamber, the photoelectric sensor detects light scattering caused by smoke particles, indicating the presence of combustion products.

3. Heat Detection & Temperature Analysis

At the same time, the thermal sensor monitors fixed temperature levels and rate-of-rise changes to identify abnormal heat conditions.

4. Intelligent Multi-Criteria Evaluation

Data from both smoke and heat sensors is analyzed using intelligent algorithms to determine whether the combined pattern represents a real fire event.

5. Alarm Confirmation & Visual Indication

Once a genuine fire condition is confirmed, the detector activates its alarm state and provides a clear 360-degree LED visual indication.

6. Digital Alarm Communication to Panel

The detector transmits a digital alarm signal with its unique address to the fire alarm control panel, enabling precise location identification and rapid emergency response.

Product in One Line 

I need a reliable multi-criteria detector that senses smoke and heat accurately, reduces false alarms, and triggers timely evacuation and response during real fire events. 

Technical Specification

PARAMETER

Specification

Product Type

Intelligent Addressable Analog Photothermal Detector (Multi-Criteria)

Detection Method

Photoelectric Smoke + Thermal Detection

Communication Protocol

Intelligent Digital Communication Protocol

Loop Voltage

15 Vdc – 40 Vdc

Average Standby Current

70 µA @ 24 Vdc

Alarm Current

6 mA @ 24 Vdc

Remote Output Max Current

20 mA

Temperature Range (Set)

−30°C to +70°C

Thermal Detection

Fixed temperature and / or rate-of-rise

Alarm Thresholds

4 Selectable Alarm Thresholds

LED Indication

360° Visibility LEDs

Dust Protection

Dust Restrictor Chamber (DRC)

Max Tolerated Humidity

95% RH (Non-condensing)

Max Loop Addresses

240 / 256

Weight (Including Base)

130 g

IP Rating 

IP40 (IP42 with base waterproof protection)

Diameter 

Ø 110 mm

Height

48 mm

Standards Compliance

EN54

Certification

CE Compliant (EN 54) 

FAQ

What is an Analog Photothermal Detector?

An Analog Photothermal Detector is a multi-criteria fire detection device that combines photoelectric smoke sensing with thermal detection to identify fire conditions early while reducing false alarms. 

The detector continuously monitors airborne smoke and temperature changes. Intelligent algorithms analyze data from both sensing elements to confirm genuine fire conditions before triggering an alarm.

The detector identifies:
  • Smoke using photoelectric sensing
  • Heat using fixing temperature and rate-of-rise detection
By combining these two detection methods, it responds accurately to both slow-smoldering and fast-developing fires. 
When a real fire condition is confirmed:
  • The detector enters alarm mode 
  • High-visibility LEDs provide 360-degree visual indication
  • A digital alarm signal is sent to the fire alarm control panel
  • The exact detector location is identified instantly 
This allows faster response and safe evacuation.

Intelligent Multi-Criteria Photothermal Fire Detector

Agni Veiga Intelligent Analog Photothermal Detector with smoke and heat sensing. EN54 Compliant, low false alarms, addressable fire detection.