Nocpix SLIM H35 — 640×512 thermal riflescope

How far you can see a person

112 m make out detail182 m tell what it is729 m spot it┆ maker’s claim

501002005001k2k5k m

Calculated from the sensor's pixel pitch and the lens focal length, for clear air.

Nocpix quotes 1,600 m, 2.2× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ

NocpixRiflescope · 640-class

Nocpix SLIM H35

Approx. price: ~$3,299
Sensor: 640×512 · 12 µm
Lens: 35 mm · 2×
Weight: 18.7 oz

Price and availability on Nocpix’s site may differ.

Best for

A dedicated night rifle for hogs and coyotes inside about 150 yards

01Specifications

As published by Nocpix. Sources: nocpixusa.com (product page feature chart + MSRP), Nocpix SLIM datasheet (sheet says IBP-7 x2 at 4+ h each; product page says the included IRB-2 18650-style cells, used here; single 18.70 oz, 8.50 in printed for the series); irayusa.com $2,499, irayusa.com (Wifi yes, Country of Manufacture China).

Sensor: 640×512
Pixel pitch: 12 µm
NETD: ≤18 mK
Refresh rate: 50 Hz
Lens: 35 mm
Base magnification: 2×
Digital zoom: up to 8×
Field of view: 12.6° horizontal
Display: 1024x768 AMOLED
Claimed detection: 1,600 m
Claim basis: unspecified
Run time: 4 h
Battery type: 18650
Weight: 18.7 oz
Length: 8.5″
Laser rangefinder: No
Ballistic calculator: No
Records video: Yes
Wi-Fi: Yes
IP rating: IP67
Warranty: 5 years
Country of origin: China
Approx. price: ~$3,299

02Pros and cons

From the published specs. What owners report is in the next section.

For it

640×512 sensor, 3× the detail of an entry-level 384
Sensitive sensor that picks out small heat differences on humid or rainy nights (56th-best of 285 that publish it)
Takes 18650 batteries you can swap in the field
Light at 18.7 oz, 38th-lightest of the 194 riflescopes here
Waterproof (IP67), survives a dunking
Records video and connects to a phone app
Warranty: 5 years

Against it

Only 4 h of battery
Short 35 mm lens: a wide view, but less reach than a 50 mm scope
No rangefinder, so you judge distance by eye
Zoom past 2× is digital and gets blurry

03What owners say

owner discussions, 2024–2026

Summarised from 8 public owner discussions between 2024 and 2026. Owner experience, not a measurement.

Owners bought the Slim H35 because it is both a scope and a handheld: it lifts off its quick-detach mount to scan, then goes back on the rifle. Prices owners quoted ran from about $2,500 to $2,900, and in 2024 and 2025 people were cross-shopping it against a used Talion XG35, an AGM Rattler 640, an RH50 and the Rix Storm S6. The praise is consistent: a sharp image for the money, and very good behaviour in humid air and light rain.

The loudest praise comes from one owner who has used the Talion, Rattler and Varmint and also looked through it side by side with a Thermion 2 LRF XP50 Pro. Calmer owners back up the main points. One who also owns a Bering Super Yoter 35 that cost him about $4,000 says the cheaper Nocpix has the clearer image and the better quick-detach system. Units were backordered for about a month in early 2025.

What owners like

The detachable mount keeps its zero: an owner who lifted it off to use as a handheld and put it back saw very little shift.
Owners say it copes with humidity better than most, including one who ran it at 99 percent humidity and in light rain with little effect on the image.
An owner who also has a Bering Super Yoter 35 says the Nocpix is clearer for much less money, and prefers its quick-detach system, which works with several bases.
Only three buttons on top, which one buyer prefers to the Rattler's five because there is less chance of pressing the wrong one in the dark.
Owners describe the recorded video and audio as very good, and it zeroed in a couple of shots after a laser bore-sight on a 6.8.

Common complaints

Getting it back on the mount in the dark means lining up the lug and closing the lever, so the owner who praised the return to zero still uses a separate handheld when he needs a quick shot.
At 2x base magnification it is a close-range tool; owners steering buyers toward coyotes at longer range point them to a 3x unit such as the RH50 instead.
Owners comparing it with iRay's Rico MK2 say the Rico has the faster 60 Hz refresh and the better display, and one buyer who weighed both bought the Rico.

Slim H35 or a used Talion XG35?

Owners told a buyer facing roughly $2,900 new against $1,900 used to take the Nocpix if he wanted to use it both as a handheld and on the rifle, because of its mounting system. One owner who has used both rates the Nocpix's image higher and mentions the Talion's known battery-door problems.

Can you spot with it off the rifle and still make a shot?

It holds zero when remounted, but the owner who tested it says lining up the lug and closing the lever in the dark takes time, so he keeps a separate handheld for scanning. Owners treat the detach feature as a convenience, not a fast swap.