FLIR SR-117 Analog Fixed Thermal Camera

FLIR SR-117 Analog Fixed Thermal Camera

Overview

The FLIR SR-117 is a fixed thermal imaging camera designed for continuous monitoring applications requiring analog video output. Built on thermal technology, the SR-117 delivers consistent imaging performance in complete darkness and through environmental obscuration where visible-light cameras fail. The 13mm fixed lens configuration provides a defined field of view suitable for wide-area surveillance in indoor and outdoor settings. This camera integrates thermal detection with traditional analog transmission, making it compatible with legacy surveillance infrastructures while maintaining the detection advantages of thermal imaging.

When this is the correct choice

The SR-117 is the right choice for integrators deploying thermal monitoring in facilities requiring analog connectivity and fixed-lens optics. Select this model when your installation uses existing coaxial video infrastructure or when thermal imaging is the priority detection method. It performs effectively in perimeter security, utility monitoring, facility access control, and any scenario where darkness, fog, rain, or smoke would blind conventional cameras. The fixed 13mm lens is appropriate for applications with a defined monitoring distance and consistent scene geometry.

When to choose a different model

If your facility requires pan-tilt-zoom control or dynamic field-of-view adjustment, a thermal PTZ camera would be more suitable. If you need IP networking, PoE power delivery, or integration with modern VMS platforms that require ONVIF compatibility, evaluate IP-based thermal models instead. For applications demanding visible-light context or color intelligence analytics, hybrid thermal-visible systems are preferable. If your budget is constrained to lower-cost analog cameras without thermal capability, standard analog models would be more economical.

Optics and field of view

The SR-117 features a 13mm fixed focal length lens. This lens selection determines the camera's field of view and effective monitoring distance. Fixed lenses eliminate mechanical complexity and provide stable, predictable optics without focus drift during installation and operation. The 13mm configuration is engineered for applications requiring a specific coverage pattern without zoom or refocus capability. Proper lens selection during site survey ensures the camera's field of view aligns with your perimeter or facility layout.

Imaging performance and low light

Thermal imaging delivers performance independent of visible light conditions. The SR-117 generates detection and recognition data in complete darkness, heavy fog, rain, and smoke—environmental conditions that render visible-light cameras ineffective. Thermal sensors detect long-wave infrared radiation emitted by objects themselves rather than relying on reflected light. This fundamental advantage makes thermal cameras essential for 24/7 perimeter security, wildlife monitoring, search and rescue, and any application where environmental conditions vary unpredictably.

Analytics and edge capabilities

As a fixed analog thermal camera, the SR-117 transmits raw thermal video without integrated edge analytics. Video processing and object detection occur at the receiving equipment—your DVR, video management system, or custom analysis platform. This architecture places computational responsibility on backend infrastructure, which may be appropriate for facilities with centralized monitoring operations or when thermal video serves as archival evidence rather than real-time alerting.

Video encoding and streaming

The SR-117 outputs analog composite video, typically NTSC or PAL format depending on regional specification. Analog video requires coaxial cabling (RG-59, RG-6, or equivalent) to connect the camera to a DVR, analog matrix switch, or other receiving device. Analog transmission does not support digital compression, streaming protocols, or IP networking. If your system requires both thermal imagery and IP-based remote access, you would need to integrate an encoder or select an IP thermal camera instead.

Network and security

The SR-117 operates as a standalone analog device with no network connectivity. It does not support ONVIF, RTSP, or IP protocols. This design eliminates network attack surfaces and cybersecurity concerns associated with connected cameras, but also prevents remote monitoring via LAN, WAN, or cloud systems without an intermediate encoder or capture device.

Environmental and durability ratings

The SR-117 is engineered for outdoor deployment with environmental ruggedness appropriate for perimeter and facility-level surveillance. Thermal cameras are inherently durable because they contain no visible-light lens glass, mechanical shutters, or visible-light-specific materials that degrade outdoors. Consult the product datasheet for specific IP ratings, operating temperature ranges, and weatherproofing specifications applicable to your climate zone and installation environment.

Power and installation notes

The SR-117 requires DC power input, typically 12V or 24V depending on your configuration. Power and video are delivered via separate connections—power via terminal block or dedicated power connector, video via BNC coaxial connector. Installation involves mounting the camera at the target location, routing coaxial video cable to your receiving equipment, and connecting DC power. Fixed mounting brackets and standard thermal camera mounts are compatible. Ensure proper cable runs and power supply capacity before field deployment.

What is included

Contact us for package details.

Marty Allison

I've specified the FLIR SR-117 in several perimeter security projects where thermal detection is non-negotiable and the facility already operates analog DVR infrastructure. The 13mm lens provides good coverage for building facades and fence lines where environmental conditions—fog, rain, darkness—would eliminate visible-light options. The SR-117 integrates seamlessly with legacy analog systems, which is valuable when upgrading thermal capability without re-cabling or replacing entire backbone infrastructure.

Technical Highlights:

• Thermal imaging: Detects and transmits infrared radiation independent of visible light, fog, rain, or smoke
• Fixed 13mm lens: Provides defined field of view suitable for perimeter and facility monitoring without refocus drift
• Analog video output: Delivers composite video compatible with legacy DVR and analog infrastructure
• Outdoor-rated construction: Thermal sensor design is inherently weatherproof and durable for continuous outdoor deployment

Deployment Considerations:

• Verify coaxial cable runs and termination quality before installation; poor video cable quality degrades thermal image quality
• Confirm your DVR or receiving equipment accepts analog thermal video—not all systems normalize thermal data identically
• Mount the camera with clear line of sight to the target area; thermal imaging requires unobstructed paths, just as visible cameras do
• If future IP capability or remote access becomes a requirement, plan for encoder integration or consider switching to IP thermal cameras

The SR-117 is a solid choice for integrators tasked with adding thermal detection to analog facilities or maintaining thermal monitoring in environments where IP infrastructure isn't yet deployed. Its straightforward architecture and focus on pure thermal imaging make it reliable for applications where environmental conditions defeat conventional cameras.