FLUKE CV301 ClirVu Inch / 75 mm Infrared Window
- This model is the same as the CV300 but with security key door latch
- Enhance safety and compliance without compromise
- Complete with Infrared Window secure key for secure access to critical equipment
The FLUKE CV301 ClirVu Infrared Window is the smart solution for safer, faster and fully compliant thermal inspections. Featuring a 75 mm (3 inch) viewing area and a secure key latch, it allows authorised personnel to inspect energised equipment without opening panel doors or powering down.
Engineered for the toughest environments, the CV301 is IP67 rated, UV and corrosion resistant, and tested to the highest arc blast standards (63 kA arc tested). Its exclusive ClirVu coating protects the optic from dirt and moisture, ensuring a crystal-clear visual and thermal view. Install in under five minutes - and you may never need to open the panel door again.

FLUKE CV301 ClirVu Key Features:
- Size: 3 inch (75 mm)
- This part number comes with a secure key door latch (see comparison chart)
- Increase the safety and speed of your electrical infrared inspections
- Under 5 minute installation with 1 person; no need to remove panel door
- Clearly view equipment both visually and thermally with ClirVu coating that protects the optic from the elements
- Corrosion and UV resistant for challenging outdoor environments - IP67 rugged
- Built to the highest arc blast protection (63kA arc tested):
- High temperature silicon gaskets
- Mounting and door latches provide high pressure gasket compression
- Die cast components are manufactured with the highest strength alloys Jam nut screws are made from 4037 steel, heat treated to 160,000 psi tensile
- Torture Tested to the highest test ratings:
- IEEE C37.20.7 63 kA Arc tested at KEMA, UL 50/50E/50V, UL1558, IEC60529-1: IP67, IEC 60068, NEMA 4/12, CSA C22.2 NO. 14-13:2012, and CE
- Corrosion and UV resistance for challenging outdoor environments
▶ Video: How to Select The Right FLUKE IR Window:

▶ Video: Installing a FLUKE IR Window:

Secure Key for FLUKE Infrared Windows – Because Access Matters
Keep your inspections safe, compliant, and controlled. The Fluke Infrared Window secure key ensures that only authorised personnel can access critical inspection points, protecting your team and equipment. Prevent unauthorised access, maintain equipment integrity, and meet safety standards - all with one simple, secure solution.
Equipment Integrity
Unsecured access to electrical panels can result in unnecessary opening of cabinets, increased arc flash risk, and even contamination or damage to sensitive electrical components. A secure key system helps to maintain the integrity of your electrical infrastructure, limiting access to trained thermographers and maintenance professionals.
Operational Confidence
When your maintenance team knows that every IR window is locked and only accessible to authorised users, it fosters a culture of responsibility and safety. You can be confident that inspections are being performed correctly, and your critical assets are not being exposed to unnecessary risks.
What comes with the FLUKE CV301 ClirVu?
- 3 inch (75 mm) Infrared Window
- Security key door latch
- Warranty statement
If you do not require security key door latch click HERE.