FLIR SR-304 Analog Fixed Thermal Camera

FLIR SR-304 Analog Fixed Thermal Camera

Overview

The FLIR SR-304 is a fixed thermal imaging camera designed for continuous analog video surveillance in demanding thermal monitoring applications. Equipped with a 100mm lens, the SR-304 delivers thermal imaging capabilities suitable for perimeter security, facility monitoring, and industrial thermal inspection. As an analog camera, the SR-304 integrates into existing analog video infrastructure without requiring network connectivity, making it practical for facilities with established CCTV systems.

When this is the correct choice

The SR-304 is the right choice when you need thermal detection capabilities within an analog surveillance framework. Thermal imaging excels in complete darkness, through fog, and in conditions where visible-light cameras fail. The SR-304 is ideal for perimeter fencing, building envelope monitoring, equipment temperature screening, and security applications requiring 24/7 thermal awareness. Its fixed 100mm lens provides long-range thermal imaging without pan-tilt mechanics, reducing maintenance and failure points.

When to choose a different model

If your infrastructure is network-based or IP-enabled, a thermal network camera will provide superior integration, remote management, and analytics capability. If your application requires pan-tilt-zoom capability or motorized lens adjustment, a PTZ thermal platform is more appropriate. For applications requiring visual context alongside thermal data, a dual-sensor or hybrid thermal/visible camera may be necessary.

Optics and field of view

The SR-304 features a fixed 100mm thermal lens. This focal length is engineered for long-range thermal surveillance, suitable for perimeter applications and elevated installation points where subjects of interest are at significant distance. The fixed lens eliminates zoom capability but provides optical stability and straightforward installation geometry.

Imaging performance and low light

As a thermal camera, the SR-304 operates independently of visible light. Thermal sensors detect infrared radiation emitted by objects based on their temperature, enabling imaging in complete darkness and through light obscuration such as fog, smoke, or dust. This fundamental advantage makes thermal imaging invaluable for 24/7 surveillance in environments where visible-light cameras become blind.

Analytics and edge capabilities

The SR-304 is an analog thermal camera and does not include embedded edge analytics, artificial intelligence, or object classification. Its primary function is thermal image acquisition and transmission. Integration with external thermal analysis software or video management systems will be required for advanced thermal event detection, temperature alarming, or anomaly alerting.

Video encoding and streaming

The SR-304 outputs analog composite video (NTSC or PAL). Analog output integrates directly with analog DVR systems, analog matrices, or analog recording equipment. For network distribution or integration with IP-based systems, an external analog-to-IP converter or encoder is required.

Network and security

As an analog camera, the SR-304 does not natively support network connectivity, ONVIF, or IP-based protocols. No network authentication, firmware updates, or remote access is available at the camera level. Security posture depends entirely on the integrity of the analog cable pathway and the security of any downstream encoding or recording equipment.

Environmental and durability ratings

Contact the manufacturer for detailed environmental ratings, IP classification, temperature operating range, and weatherization specifications. These attributes are critical for outdoor deployment planning and will determine suitability for rooftop, wall-mounted, or conduit-protected installations.

Power and installation notes

Verify power requirements (12VDC typical for thermal cameras) and confirm compatibility with your existing power distribution infrastructure. Confirm cable routing, surge protection, and grounding requirements with your FLIR documentation. Thermal lens cleanliness significantly impacts image quality; establish a maintenance protocol for lens and window cleaning.

What is included

Contact us for package details.

Ted Perry

I've evaluated the FLIR SR-304 during deployments where analog infrastructure was the operational constraint. Thermal imaging has a genuine operational advantage—it functions in darkness and poor visibility when visible-light cameras are worthless. The SR-304 delivers that core thermal capability in a straightforward fixed-lens package.

Technical Highlights:

• Thermal sensing: Operates in complete darkness and through environmental obscuration where visible cameras fail.
• Analog integration: Works within existing analog video infrastructure without network dependencies.
• Fixed 100mm lens: Long-range thermal imaging for perimeter and elevated-position installations.

Deployment Considerations:

• Analog-only output requires DVR or external encoding for network distribution; plan your signal path carefully.
• Thermal cameras require regular lens cleaning to maintain image contrast; factor maintenance into your operational procedures.
• Verify mounting height and thermal target distance against the 100mm lens coverage before installation.

The SR-304 is a capable choice for thermal surveillance in analog environments. Confirm power delivery, cable routing, and maintenance access before commitment. For integrators supporting legacy or analog-primary facilities, this is straightforward thermal imaging equipment.