Holosun DRS-TH Digital Thermal Reflex Sight

Holosun DRS-TH Digital Thermal Reflex Sight is a rifle-mounted fusion optic that combines a traditional LED red-dot sight with integrated thermal imaging. Designed as a single, unified aiming system, it overlays thermal imagery with selectable digital reticles to support rapid target identification and engagement in low-light or obscured environments.

Developed by Holosun, the DRS-TH is intended for rifles used in range evaluation, field observation, and duty or patrol applications where thermal awareness and fast aiming are required. By integrating a multi-reticle LED reflex sight with a thermal sensor in one housing, the optic reduces the need for separate devices while maintaining a compact rail footprint. Built-in recording and rechargeable power further support extended use with minimal external accessories.

Key Features

• Combined LED reflex sight and thermal fusion optic for rifles

• LED Multi-Reticle System (MRS) with selectable patterns:

  • 2 MOA red dot

  • 65 MOA circle

  • Circle-dot combination

• Thermal imaging with reported 256 × 192 thermal sensor resolution

• Multiple thermal display palettes, including White Hot, Black Hot, Highlight, Outline, and Fusion

• Digital overlay of reticle and thermal image for rapid target identification

• Onboard photo and video recording with reported 32 GB internal storage

• Rechargeable power using an 18350 Li-ion battery format

• Magnetic USB interface for charging and data transfer

• Multiple brightness and imaging modes for day and night operation

• IP67-rated waterproof construction for environmental resistance

Specifications & Construction

The DRS-TH is constructed from 7075 aluminum with a black matte anodized finish for durability. Reported overall dimensions are 3.85 × 6.90 × 9.20 (as listed in source data). The optic mounts directly to Picatinny / Weaver rails and integrates both the LED reflex sight and thermal imaging module into a single housing. Power is supplied by a rechargeable 18350 Li-ion battery, supported by a magnetic USB charging and data interface. Environmental protection is listed as IP67 waterproof.

Compatibility & Intended Use

This optic is designed for rifles equipped with standard Picatinny or Weaver rails. Typical setups include patrol or duty rifles, range and training rifles, and field observation platforms where a combined red-dot and thermal solution is preferred. The DRS-TH can function as a primary close-range aiming system while providing thermal awareness for detection and identification tasks.

What’s Included

• Holosun DRS-TH Digital Thermal Reflex Sight

• Rechargeable 18350 Li-ion battery

• Magnetic USB charging/data cable

• Multi-tool

• Lens/cleaning cloth

• Manufacturer documentation