FLIR 427-0053-01-00 SR-618 Fixed Analog Thermal Camera 35MM
When perimeter detection needs to work in complete darkness, through smoke, or across long distances where visible light cameras fail, thermal imaging becomes the only reliable solution. The FLIR SR-618 delivers uncooled thermal sensing in a fixed analog format, purpose-built for integrators deploying legacy analog infrastructure or hybrid systems where thermal detection enhances existing visible camera arrays. The 35mm lens configuration provides narrow field coverage optimized for monitoring specific zones at extended ranges.
Key Features
- Uncooled thermal sensor detects heat signatures in total darkness without supplemental lighting
- 35mm focal length for long-range detection and narrow field applications
- Analog output integrates directly with existing coax infrastructure and analog recording platforms
- Fixed lens design eliminates motorized components for enhanced reliability in outdoor installations
- Environmental rating suitable for continuous outdoor operation in harsh weather conditions
- Thermal imaging cuts through fog, smoke, dust, and light rain that degrades visible spectrum cameras
- Detects intruders based on body heat rather than visible features, reducing false alarms from shadows and lighting changes
- Compatible with standard analog DVRs and video management systems supporting composite video input
The SR-618 addresses a specific integration challenge: adding thermal detection capabilities to sites with established analog video infrastructure. Rather than requiring complete system replacement, this camera accepts standard 12VDC power and outputs composite video that feeds directly into existing DVRs or video matrices. The 35mm optics suit applications where you need to monitor gates, loading docks, fence lines, or other defined areas at distances where wider thermal lenses would lose detection resolution. Typical deployments include critical infrastructure perimeters, industrial facilities with low-light areas, and campuses requiring after-hours intrusion detection without lighting that creates nuisance or operational issues.
Integrators specify thermal cameras when the cost of a missed detection event exceeds the equipment investment. The SR-618 fills that role in analog environments, providing reliable heat-based detection that operates independently of ambient light conditions. Mount height, lens selection, and detection range requirements should be calculated based on target size and site-specific thermal contrast conditions.
