DNT Hydra-LRF HS335R Multi-Function 384 Thermal Scope

The DNT HYDRA-LRF HS335R is a multi-function thermal riflescope with a laser rangefinder and ballistic calculator built into the housing. A 384×288 sensor behind a 35 mm lens resolves finer detail than the 256-class models, and the same unit clips on ahead of a day scope or comes off the rifle as a handheld scanner. Ranging and corrected holds work in every mode.

The DNT HYDRA-LRF HS335R combines a 384 sensor, laser rangefinder, and three-mode mounting

Four pieces of equipment collapse into the HS335R: a thermal riflescope, a clip-on, a handheld scanner, and a laser rangefinder with ballistic math attached. Standalone on a Picatinny rail, it aims through its own reticle. Ahead of a day optic, it feeds thermal into glass already zeroed on the rifle. Off the rifle, it scans by hand. An included QDM150 quick detach mount carries it between those roles without re-zeroing.

Every step from scan to shot happens through the HS335R

Detached from the mount, the HS335R scans handheld across a field or tree line. When heat shows up, the QDM150 snaps it back onto the rail with zero intact. A press of the range button reads the distance, the ballistic profile applies the correction, and the hold appears in the same sight picture. No second device enters the sequence and nothing leaves the shooter's hands.

Measured distance replaces estimated distance on the HS335R

Thermal images flatten depth cues, and a hog at 220 yards can read like one at 150 through any optic. Ranging on the HS335R reaches from 5 to 1,200 yards and puts the real number in the display without lowering the rifle. Knowing the distance is where confidence before the shot actually begins.

Corrected holds reach the HS335R display alongside the range reading

A distance number by itself still leaves the drop calculation unfinished. The DNT Ballistic Engine inside the HS335R takes the measured range, applies the stored profile for the rifle and load in use, and returns the corrected hold on screen. Profiles are built on the device or in the DNT App, and several can be saved for different rifles.

A 384×288 sensor resolves finer detail than the 256-class HYDRA-LRF models

A 384 sensor means a 384×288 pixel array, roughly twice the pixel count of a 256×192 array. Extra pixels across the same scene sharpen the moment of deciding what a heat signature is. The HS335R runs that sensor at 50 fps behind a 1024×768 Micro-OLED display, with 13.2 by 9.9 yards of field of view at 100 yards from the 35 mm lens and 3x base magnification.

Digital zoom to 12x stays usable on the HS335R through ISR processing

DNT's Image Super Resolution (ISR) recovers detail that digital zoom normally softens, holding edges and texture across the 3x to 12x range. ISR is image processing rather than added sensor resolution — the HS335R remains a 384×288-class optic, and buyers weighing sensor classes should judge it as one.

Battery runtime on the HS335R reaches 4.5 hours per cell

Each 18650 flat-top battery runs the HS335R for up to 4.5 hours, and two batteries plus a charger ship in the box. Swapping cells in the field covers a full night without carrying a power bank, though a 5V USB-C port accepts one 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.

Wi-Fi pairing links the HS335R to ballistic profiles on a phone

Connecting the HS335R to 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 edits made in the app carry back to the device, so load data stays current without working through menus on the optic.

Mixed-terrain hunters who want ranging built in choose the HS335R

Hunters moving between timber, brush, and open fields in the same night are the core fit for the HS335R, where 3x base magnification handles scanning and the 35 mm lens holds detail further out. Coyote and hog work benefits from the 384 sensor when identification matters before the shot. Buyers who want the highest sensor class with ranging should look at the 640-class HS635R, and hunters with no use for a rangefinder save real money with the standard HS335.

FAQ

What is the difference between the DNT HYDRA-LRF HS335R and the HS335?

The HS335R adds an integrated laser rangefinder and the DNT Ballistic Engine, at 1.3 oz more weight. Optically the two are identical: the same 384×288 sensor, 35 mm lens, 3x base magnification, and 13.2 by 9.9 yard field of view.

How far does the HS335R rangefinder measure?

The HS335R rangefinder measures from 5 to 1,200 yards. Readings appear in the sight picture without lowering the optic or reaching for a separate device.

What is the difference between the HS335R and the HS225R?

The HS335R uses a 384×288 sensor and a 35 mm lens, while the HS225R uses a 256×192 sensor and a 25 mm lens. Both carry the same rangefinder and Ballistic Engine, so the difference is image detail and reach rather than features.

Does the HS335R 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 HS335R be used as a clip-on with a day scope?

Yes. The HS335R 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.