DNT HYDRA-LRF HS225R Multi-Function 256 Thermal Scope

The DNT HYDRA-LRF HS225R is a multi-function thermal riflescope with a laser rangefinder and ballistic calculator built into the housing. One 14.4 oz unit scans as a handheld, clips on ahead of a day scope, shoots as a standalone thermal, and ranges targets with corrected holds on screen. Entry pricing on the 256 sensor class makes the HS225R the least expensive path to that full stack in the HYDRA-LRF line.

The DNT HYDRA-LRF HS225R packs a rangefinder, ballistic engine, and three-mode thermal into one housing

Added up, the HS225R replaces a stack of gear: a dedicated thermal riflescope, a clip-on, a handheld scanner, a laser rangefinder, and the ballistic math juggled between them. Standalone, it aims through its own reticle. Ahead of a day optic, it feeds thermal into glass already zeroed. Off the rifle, it scans. The included QDM150 quick detach mount moves it between all three roles without re-zeroing, and the rangefinder and Ballistic Engine ride along in every mode.

Scan, range, and shoot without taking the HS225R off target

A night with the HS225R runs like this: scan handheld with the mount detached, moving light and fast. Heat appears, and the QDM150 clicks back onto the rail with zero held. Range the target through the sight picture, read the corrected hold, and shoot. Every step happens through one device — nothing to swap, lower, or fumble in the dark, and no second screen pulling eyes off the target.

Guesswork over distance ends when the HS225R reads it for you

Distance is the hardest thing to judge at night. Depth cues flatten in a thermal image, and a coyote standing at 180 yards can read like one at 120. Pressing the range button on the HS225R returns the actual number, from 5 yards out to 1,300 yards out, displayed in the sight picture with both hands still on the rifle. Confidence before the shot starts with knowing exactly how far away the target is.

Holdover math runs inside the HS225R before the shot breaks

A range number alone still leaves the drop calculation to the shooter. Measured distance on the HS225R feeds the DNT Ballistic Engine, which applies the stored profile for the rifle and load and puts the corrected hold on screen. Profiles are configured on the device or in the DNT App, and multiple profiles cover different rifles. The gap between ranged it and held right closes before the trigger breaks.

A 256×192 sensor at 50 fps keeps the HS225R picture smooth

A 256 sensor means a 256×192 pixel array, and the HS225R runs a 12 μm version at 50 fps behind a 1024×768 Micro-OLED display. Field of view spans 12.3 by 9.2 yards at 100 yards from the 25 mm lens and 3x base magnification, with digital zoom to 12x. Smooth refresh matters most while scanning, keeping movement fluid instead of smearing. Sensitivity in this sensor class separates warm animals from cool ground in typical night conditions.

ISR processing backs the HS225R's digital zoom out to 12x

DNT's Image Super Resolution (ISR) recovers detail that digital zoom normally softens, keeping zoomed images usable across the 3x to 12x range. ISR is image processing rather than added sensor resolution — the HS225R remains a 256×192-class optic, and buyers weighing sensor classes should judge it as one.

5.5 hours per battery keeps the HS225R running through a night

Two 18650 flat-top batteries and a charger ship with the HS225R, and each battery runs the unit for up to 5.5 hours. A field swap covers a full night of scanning and shooting, and a 5V USB-C port accepts external battery banks for long stationary sits. DNT specifies flat-top cells measuring 65 mm by 18 mm, and protected cells run longer and will not fit the compartment.

Ballistic profiles and footage sync between the HS225R and the DNT App

Wi-Fi pairing with the DNT App puts live viewing, recording management, and ballistic profile editing on a smartphone. Built-in 32 GB memory holds footage captured in the field with no card to buy. Profile changes made in the app carry back to the device, so load data stays current without menu-diving through the optic.

Hunters who would otherwise carry a separate rangefinder fit the HS225R best

Buyers who would otherwise buy a thermal and a standalone rangefinder are who the HS225R serves: one housing replaces both, and the holdover math comes along free. Coyote and hog hunters who want ranging confidence without stepping up in sensor cost get exactly that here. Hunters who need more image detail for identifying targets at distance should look at the 384-class HS335R, and anyone with no use for ranging saves real money with the standard HS225.

FAQ

What is the difference between the DNT HYDRA-LRF HS225R and the HS225?

The HS225R adds an integrated laser rangefinder and the DNT Ballistic Engine for drop compensation, at 1.3 oz more weight. Optically the two are identical: the same 256×192 sensor, 25 mm lens, and 3x base magnification.

How far does the HS225R rangefinder measure?

5 to 1,300 yards

Does the HS225R have a ballistic calculator?

Yes. The DNT Ballistic Engine is built in, with rifle and load profiles configured on the device or through the DNT App. Measured range feeds the active profile and holdover correction appears in the display.

Does the HS225R come with a mount?

Yes. A QDM150 quick detach mount is included, along with two 18650 batteries, a charger, an eye cup, a flip-up lens cover, two USB cables, a user manual, a quick start guide, and a lens cleaning cloth.

Can the HS225R be used as a clip-on with a day scope?

Yes. Like every HYDRA, the HS225R mounts ahead of a day optic and feeds it a thermal image, using the day scope's reticle and zero. DNT recommends LPVOs or low-magnification prism optics, kept in the lower half of the LPVO's magnification range.