Clip-On Thermal Imagers & Night Vision Thermal Overlays

Explore clip-on thermal imagers, also known as COTI devices, designed to add thermal overlay capability to compatible analogue night vision goggles. These compact systems attach to supported night vision devices and project thermal information into the intensified image, helping combine image-intensified detail with heat-signature detection.

This collection includes InfiRay Jerry-C and Jerry C-PRO thermal overlay devices for compatible PVS-14-style monoculars and binocular night vision systems. Before ordering, confirm the exact night vision device, objective-lens interface, clamp ring, power configuration and mounting compatibility.

Choose the Right COTI Thermal Overlay

Jerry C-PRO Thermal Overlay

The Jerry C-PRO COTI is the primary active product for this collection. It uses a 640×512 VOx thermal sensor, 12 μm pixel pitch, 50 Hz refresh rate and a wide 35-degree thermal overlay field of view. It is designed for compatible PVS-14, DTNVS, RNVG, BNVD and PVS-31-style night vision systems.

The Jerry C-PRO supports Highlight, Outline and Breath display modes, allowing the thermal information to be presented in different ways according to the environment and user preference. The product also lists Bluetooth remote support, digital compass, optional GPS capability, IP67 waterproof construction and CR123A or external battery-pack power options.

Jerry-C5 and Jerry-CE5 Thermal Clip-On Imagers

The Jerry-C5 Thermal Clip-On Imager and Jerry-CE5 Thermal Clip-On Imager represent previous Jerry-C configurations. The CE5 version uses an external battery pack instead of an onboard battery compartment, reducing front-mounted weight and extending operating time.

If these products are discontinued or no longer available, they should remain visible only as archived comparison pages or be redirected to the newer Jerry C-PRO product where appropriate.

What Is a COTI?

A COTI, or clip-on thermal imager, is not the same as a thermal scope or a daytime-optic clip-on. A COTI attaches to a compatible night vision device and overlays thermal information into the existing image-intensified view.

This makes a COTI useful when users want heat-signature detection without replacing their existing night vision monocular, dual-tube night vision binocular or complete NVG system.

COTI Versus Helmet-Mounted Thermal Monocular

A helmet-mounted thermal monocular provides a separate thermal display, often used beside a night vision monocular on a bridge. A COTI instead projects thermal information into the night vision image itself.

The best option depends on field of view, display preference, helmet weight, power requirements, device compatibility and whether the user wants an integrated overlay or a separate thermal channel.

COTI Versus Thermal Clip-On Scope Attachment

A thermal clip-on sight is normally designed to mount in front of a compatible daytime optic. A COTI is designed to mount directly to a night vision device. These two product categories should remain separate because they serve different optical systems and search intents.

Compatibility with Night Vision Devices

Before selecting a thermal overlay device, confirm:

• The exact night vision device model
• PVS-14-style or device-specific objective-lens compatibility
• Clamp ring or mounting bracket requirement
• Monocular or binocular installation position
• Thermal overlay field of view
• Sensor resolution and refresh rate
• Display modes and polarity options
• Onboard or external battery configuration
• Device weight with mount installed
• IP rating and operating temperature
• Included remote, cables, rings and adapters

Complete Your Night Vision and Thermal Setup

Complete your setup with compatible night vision battery packs, thermal lens protection, thermal accessories, NVG mounts and bridge components.

For broader setup guidance, read our night vision and thermal buying guide, the helmet-mounted night vision and thermal setup guide, and the night vision terminology guide.