COTI for PVS-14: Fit, Mounting and What You See Through a Clip On Thermal

The PVS-14 is the most common night vision device in civilian hands, and it is the first thing most owners want to add thermal to. A clip on thermal imager, or COTI, is the way to do that without buying a second device to juggle. This guide covers how a COTI fits a PVS-14, where it sits, how to mount it, what you see through it, what it does to your helmet setup, and what the whole kit costs.

Does a COTI fit a PVS-14?

Yes, with the right clamp ring. The Jerry-C Pro rides on a ring that closes around the objective lens of a 1x night vision tube, the lens at the front of the PVS-14. The ring set that ships with every Jerry-C Pro is set up for our own PVS-14, from $1,784.95, in both the PRO and STANDARD housings, and for our PVS-31 PRO.

The word "PVS-14" covers a lot of different housings from a lot of makers, and objective sizes are not all the same. So we do not tell you the Jerry-C Pro fits every PVS-14 in the world. If yours is not one of ours, email info@nightoperators.com with the make and model before you order, and we will tell you straight whether the clamp ring fits.

The positions come from our own photos of the Jerry-C Pro mounted on each goggle. The PRO and STANDARD housings are shaped differently around the objective, so the clip on settles at a different clock position on each. On both, the small projector at the top of the Jerry-C Pro reaches into the centre of the objective lens, which is how the heat picture gets into the tube.

How do you mount a COTI on a PVS-14?

It takes a minute and no tools. These are the steps on our product page:

1. Slide the clamp ring over the objective lens of your PVS-14.
2. Turn the ring to set the tension, then press the lever shut.
3. Slide the Jerry-C Pro onto the ring, power it on and choose Highlight or Outline.

That is all. There is no calibration step: the overlay is optical, so once the ring is closed and the unit is on, the heat lines up with what your tube shows. If your PVS-14 is new to you as well, set the tube up first with how to set up a PVS-14, focus it, then add the clip on.

What do you see through a PVS-14 with a COTI?

A PVS-14 is a monocular, so everything happens in one eye. You look through the eyepiece exactly as before. The tube picture is the same. On top of it, anything warm is marked by the Jerry-C Pro, either filled in (Highlight) or traced at the edges (Outline). A compass heading runs across the top of the view. Your other eye stays free, which many PVS-14 owners like for walking: one eye on the night vision, one eye adjusted to the dark.

Here is a real frame from Bon's own PVS-14 STANDARD with the Jerry-C Pro on, in Outline mode. Look at the small figure on the path in the middle: the tube shows the yard, and the thin bright lines show where the warm edges are.

Which eye should carry the PVS-14, and so the thermal, is worth a minute of thought. Our guide on which eye for a PVS-14 walks through eye dominance. The modes themselves are covered in COTI modes explained.

What does a COTI do to your helmet setup?

The Jerry-C Pro weighs about 90 g with its battery, and it hangs off the very front of the goggle, which is where weight is felt most on a helmet. Ninety grams is light for a clip on thermal, but it still shifts the balance forward. Two simple fixes:

• Counterweight. A little weight at the back of the helmet brings the balance back. The numbers are in helmet counterweights for a PVS-14 or PVS-31 rig.
• The battery pack. The Jerry-C Pro runs on one CR123A in the unit for about 3 hours, or on the external battery pack by cable for about 10 hours (both at 22 C). For long nights, run the pack and keep the weight off the front.

One rule matters more than any other here: use CR123A 3V lithium cells only. Never put a 16340 rechargeable cell in the Jerry-C Pro. A 16340 runs at 3.7V, higher than the unit is made for.

How much is a PVS-14 with a COTI?

If you already own a PVS-14, the Jerry-C Pro at $2,949 is the whole cost. If you are buying both, the kit price takes $150 off automatically in the cart. Here are the PVS-14 kits on the product page:

Which FOM tier to pick for the tube is its own question; PVS-14 price tiers compared lays it out. How the Jerry-C Pro price compares with other clip on thermals is in what a clip on thermal imager really costs.

What should you check before you buy a COTI for a PVS-14?

Five checks save most of the questions we get after an order:

• Your housing. If it is our PVS-14 PRO or STANDARD, the ring set in the box fits. If it is another make, email us the model first.
• Your tube is 1x. The Jerry-C Pro is 1x so it lines up with a 1x tube. It is not made for a magnifier in front of the objective.
• Your distances. The overlay is at its best past about 30 m. If most of what you watch is inside 10 m, a clip on thermal is the wrong tool.
• Your cells. Stock CR123A 3V lithium cells, never 16340 rechargeables.
• Your use. If you want to look through a thermal by itself, the Jerry-C Pro is not that: it has no eyepiece. Read COTI vs thermal monocular first.

PVS-14 with a COTI, or a dual tube with a COTI?

Both work. On a PVS-14 you get tube and thermal together in one eye, with the other eye free, for the lowest total cost. On a dual tube such as our PVS-31 PRO the clip on sits on one of the two tubes, so you keep night vision in both eyes and thermal in one. The dual tube gives you depth perception and a more relaxed view over a long night; the PVS-14 keeps the setup lighter and the price lower. If you are still deciding between the two goggles, read PVS-14 vs PVS-31 PRO, and for the dual tube side of the COTI story, COTI on a PVS-31 or dual tube.

Frequently asked questions

What is a COTI?

A COTI is a clip on thermal imager. On a PVS-14 it clamps around the objective lens and projects a heat picture into the tube, so warm people and animals stand out on top of the normal night vision view. Our Jerry-C Pro is a 640 x 512 thermal at 1x and costs $2,949.

How much is a COTI?

Our Jerry-C Pro is $2,949 on its own. Bought with any of our PVS-14 PRO or STANDARD monoculars, $150 comes off in the cart, so a PVS-14 PRO 1250-1350 kit is $4,583.95. The US dealer listings we compared for this class ran $3,577 to $4,475 (read 22 October 2026).

What is the most affordable COTI?

The lowest priced complete 640 x 512 clip on thermal we found was our Jerry-C Pro at $2,949, against US dealer listings of $3,577 to $4,475 read on 22 October 2026. For PVS-14 owners it comes with the clamp ring set, so there is nothing else to buy before you mount it.

What is the best COTI for the money?

For a PVS-14, pick one that matches the tube at 1x, needs no calibration, ships with a clamp ring that fits your housing and runs on easy to find cells. The Jerry-C Pro does all of that at $2,949. Warranty is 3 months, up to 12 months with Operator Care.

What is the best COTI for the price?

At $2,949 the Jerry-C Pro gives a PVS-14 owner a 640 x 512 sensor, Highlight and Outline modes, a compass heading, a wireless remote, a battery pack and the clamp ring set. The 640 x 512 US dealer listings we read on 22 October 2026 started at $3,577, before any extras.

Will the Jerry-C Pro fit a PVS-14 from another brand?

Maybe. The clamp ring set is made for our PVS-14 and PVS-31 objectives, and objective sizes differ between makers. Email info@nightoperators.com with your PVS-14 make and model before you order, and we will tell you whether the ring fits your housing.