HikMicro NEOS NH35L review: shutterless thermal on a 30mm tube

The HikMicro NEOS NH35L does something a lot of thermal riflescopes still don’t: it fits a rifle the way a day scope does. The chassis is a plain 30mm tube, so standard rings mount it with no adapters and no compromise. At £1,499.99 it heads a three-model NEOS line that runs down through the NH25L at £999.99 to the NE25 at £849.99, which puts a HikMicro thermal within reach at three quite different budgets.

HikMicro calls the thinking behind the range the “Alpex 4K Lite Revolution”: the layout and handling of that popular digital scope carried across to thermal, with the aim of taking the cost, the bulk and the unfamiliarity out of the category. Pixfra and Nocpix both field serious contenders at this money, so the claim was worth testing rather than repeating.

Ed Jackson ran the NH35L on a Daystate Delta Wolf in Wülf rings, working open fields, hedgerows, dense woodland and close-quarters barns from daylight through into full dark, on quarry ranging from rats at 10m to hares at several hundred metres. His verdict is a positive one, with a single caveat attached: which NEOS you buy matters more than whether you buy one.

HIKMICRO NEOS NH35L Specification

First Impressions and Build Quality

Mount the NH35L and the first thing you notice is how light it is. At 570g it is exceptionally lean for a thermal riflescope, and that saving has a real effect on how a rifle handles across a long session. Importantly, this is not mass shed at the expense of feel – the unit is solidly put together and carries an IP67 protection rating, which means dustproof and submersible to one metre.

The 30mm tube chassis is immediately recognisable to anyone who has used the Alpex 4K Lite, and the familiarity extends to the mounting process. Standard rings fit without adapters, which removes one of the traditional friction points of moving into thermal. At 290mm without the rubber eyecup and 345.6mm with it, the profile is compact enough that it does not unbalance a lighter airgun setup. The rotatable, magnetic objective lens cap is a well-executed detail – small things like that matter over a long night.

The control layout mirrors a conventional scope closely. A rubberised focusing collar sits at the objective end, a dioptre adjustment on the eyepiece, and the central saddle carries three turrets. The right-hand turret has a small rubber power button – a single press drops to standby. The left-hand turret houses the single removable 18650 battery, which is supplied in the box. The top turret carries three rubberised buttons managing the menu, video recording and the laser rangefinder, with a rotating collar for magnification and menu navigation. Start-up from cold takes one second.

Sensor Sensitivity and Image Quality

The 384×288 @ 12µm sensor with a sensitivity of less than 18mK is the NH35L’s headline specification, and the results bear it out. Image clarity across a range of environments was consistently strong: scanning fields, hedgerows, dense woodland and old farm equipment all produced a clean, well-resolved picture. In daylight at 10m, a rat drinking deep within dense foliage was clearly identifiable. At 37m in the dark, individual foliage between the shooter and a rabbit was visible – a detail that matters practically because it flags potential pellet deflection before you take the shot.

As night fell and the ambient temperature dropped, performance improved further. A greater temperature differential between quarry and background produces a sharper, more defined image, and the NH35L made the most of it. Rabbits were tracked and identified without difficulty at ranges from 30m out to 150m. The image is processed through HikMicro’s Image Pro 3.0 algorithm and displayed on a 0.49in AMOLED screen that is clear and well-matched to the size of the unit.

What is the HikMicro Shutterless Image System (HSIS)?

Most thermal scopes use a mechanical shutter to periodically recalibrate the detector. The image freezes briefly – typically for one to two seconds at unpredictable intervals. In a handheld spotter this is a minor irritant. In a riflescope, particularly when tracking fast-moving quarry, it is a more meaningful problem.

The HikMicro Shutterless Image System (HSIS) eliminates this entirely. Paired with the Sync Pro algorithm for rapid image processing, the view is uninterrupted throughout. In practice that means no frozen frame at the critical moment before a shot. It is a straightforward technology to explain but a genuinely useful advantage in the field, and it performed without fault across all testing sessions.

True Base Magnification and Field of View

The specification sheet lists a base magnification of 4.0×, but the review unit displayed 3.2× on screen. This discrepancy reflects the true native optical magnification of the 35mm lens rather than a rounded marketing figure – it is relatively common in thermal optics, but buyers should be aware of it when comparing specifications across brands.

For pest control and closer-range work the 3.2× true base is actually the more useful figure. It provides a slightly wider field of view than a true 4× would, which matters when tracking fast-moving rats or squirrels at close quarters. At a measured range of 11m the field of view spanned approximately 1.4m, which tallies precisely with the official specification of 13.1m at 100m. Digital magnification extends from this base to 25.6× for longer ranges.

Zeroing, Ballistic Calculator and Laser Rangefinder

Zeroing was carried out using the tinfoil cross method – a small piece of tinfoil taped to the target board and angled slightly skywards to create a clean temperature differential against the background. The one-shot zero function worked without complication, and a few confirmation groups confirmed a precise zero. The menu system felt familiar given prior use of the Alpex Pro, which accelerated the process considerably.

The onboard ballistic calculator was set up using muzzle velocity data taken directly from the Delta Wolf’s display after each shot, making the input process straightforward. The integrated 1,000m laser rangefinder is operated from the top turret and functioned accurately throughout. Five independent zeroing profiles allow the scope to be used across multiple calibres or rifles without resetting the primary zero. The full menu also offers a variety of reticle designs and the option to toggle between observation and detection modes depending on requirements.

Palettes and Interface

Colour palettes include Black Hot, White Hot, Red Hot, Fusion, Red Monochrome and Green Monochrome. You can customise which palettes cycle through on a quick press of the menu button, which is a practical touch when switching between environments. The interface throughout is intuitive – HIKMICRO’s prior work on the Alpex platform is evident, and this is not a system that requires a manual to operate in the field.

Strengths

• Class-leading 18mK thermal sensitivity delivers strong image clarity, particularly in low-light and cold conditions
• Shutterless imaging (HSIS) eliminates the image freeze that affects most thermal scopes – a genuine practical advantage in the field
• Familiar 30mm tube chassis mounts with standard rings; no adapters required
• Exceptionally light at 570g without sacrificing build quality or IP67 weatherproofing
• 3m minimum focus distance suits close-quarters pest control and barn work
• One-second start-up time and eight-hour battery life cover a full night’s session
• Integrated 1,000m laser rangefinder and onboard ballistic calculator add field utility without complicating the interface
• Intuitive interface draws on the proven Alpex 4K Lite platform

Weaknesses

• At £1,499.99 the NH35L offers more than most airgun-only users need; the NH25L at £999.99 is the more focused choice for that use case
• True base magnification of 3.2× does not match the 4.0× figure on the data sheet – worth knowing before comparing specifications with competitors
• Field of view, while adequate for static pest control, is naturally tighter than a digital scope at equivalent magnification settings

Verdict

The NEOS NH35L earns its keep. The sub-18mK sensor holds a clean, well-resolved picture as conditions change, the shutterless system does exactly what HikMicro claims for it, and the 30mm tube strips out the mounting faff that puts a lot of shooters off thermal in the first place.

Where it lands is a question of rifle rather than quality. At £1,499.99 the eye relief, exit pupil and recoil rating all point squarely at rimfire and centrefire use, and on those rifles it is priced fairly for what it does. If your shooting is close-range pest control with a sub-12ft/lb airgun, look hard at the NH25L at £999.99 before you spend the extra.

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