Call Sales Free: 0800 9882434
Home » Products » CCTV Security Systems » Thermal Imaging » FLIR » SR Range

Enter your details to speak to a member of our sales team.

AlertSystems will always respect your privacy.

FLIR SR Range Thermal Imaging Camera

Key Features

  1. Proven long-wave thermal security camera technology
  2. 36°, 14° and 7° field-of-view options
  3. Network Option
  4. 6-8 pound system weights


  1. Detects man-sized threats out to 1.3 miles
  2. See in total darkness, through smoke, dust and light fog; when other cameras are at their worst, we are at our best
  3. Supports Nexus™ and common Pelco network control protocols for easy installation and integration into existing networks
  4. Portable and easy to field
The SR-19, SR-35, SR-50 and SR-100 are economic, fixed mounted thermal imagers. The provide crisp, clear thermal imagery in total darkness, light fog or smoke. They feature the same thermal imaging technology found in many of FLIR's most sophisticated security and surveillance systems, but are packaged for users who have short-to-medium-range security and surveillance as their primary application. They include FLIR's advanced image processing techniques which deliver excellent contrast regardless of scene dynamics.
Unlike other night vision systems that require low amounts of light to generate an image, the SR range need to light at all.
The SR-19, SR-35, SR-50 and SR-100 provide crisp, clear thermal imaging with 320x240 pixels. This allows the user to see more detail and detect more and smaller objects. Advanced internal camera software delivers a crisp image without the need for user adjustments. They provide high quality thermal imaging in any night or daytime environmental conditions.
The SR range are extremely rugged systems. Their vital core is well protected, meeting Mil-Std-810E and IP66 requirements, agaisnt humidity and water. A sealed lens maintains the environmental ratings of the existing enclosure. They all operate between -32ºC and + 55ºC. They have a built in heater which enables a clear lens and perfect infra-red images to be displayed on the monitor even in extremely cold conditions.
Imaging Performance  
Detector Type Focal Plane Array (FPA), uncooled microbolometer 320x240 pixels
Spectral Range 7.5 to 13um 
Field of View

SR-19: 36º (H) x 27º (V) with 19mm lens
SR-35: 20º (H) x 15º (V) with 35mm lens
SR-50: 14º (H) x 10º (V) with 50mm lens
SR-100: 7º (H) x 5º (V) with 100mm lens
Lenses are not interchangeable and must be specified at time if purchase
Spatial Resolution (IFOV)

SR-19: 2.0 mrad
SR-35: 1.1 mrad
SR-50: 0.8 mrad
SR-100: 0.4 mrad
Thermal Sensitivity 85mK at 25ºc
Image Frequency* 7.5 Hz NTSC or 8.3 Hz PAL *

SR-19: Fixed
SR-35: Fixed
SR-50: Fixed
SR-100: Manual
Electronic zoom 2x
Image processing Automatic Gain Control (AGC), Digital Detail Enhancement (DDE)
System Features  
Remote Control Focus:SR-100 only
Automatic Heater Yes
Image Presentation  
Video Output NTSC or PAL composite video
Connector Types BNC (1) provides video output
Requirements 14-32V DC or 24 V AC +/- 10%

SR-19: 6W nominal, 24W startup peak, at 24V DC, at 23ºC
SR-35: 6W nominal, 24W startup peak, at 24V DC, at 23ºC
SR-50: 6W nominal, 24W startup peak, at 24V DC, at 23ºC
SR-100: 8W nominal, 36W startup peak, at 24V DC, at 23ºC
Environmental Specifications  
Operating Temperature Range -32ºC to 55ºC
Storage Temperature Range -50ºC to 85ºC
Humidity Rain
Sand/Dust Mil-Std-810E
Encapsulation IP66
Shock Mil-Std-810E
Vibration Mil-Std-810E
Physical Characteristics  
Camera Weight

SR-19: 2.7 Kg
SR-35: 2.7 Kg
SR-50: 2.7 Kg
SR-100: 3.6 Kg
Camera Size SR-19: 279cm x 132cm x 142cm
SR-35: 279cm x 132cm x 142cm
SR-50: 279cm x 132cm x 142cm
SR-100: 381cm x 132mm x 142mm
Shipping Weight (camera+packaging) 6.9 Kg
Shipping size (camera+packaging) (LxWxH) 36cm x 51cm x 34cm
Standard Package Thermal Imager, Operator manual
*30 Hz NTSC or 25 Hz PAL available. Subject to approval of the US Department of Commerce for use outside the USA