Description
The EDRP635R is a 640 × 512 uncooled thermal imaging riflescope with a 35 mm F1.0 objective lens and a 1000 m eye-safe laser rangefinder. It is the mid-range workhorse of the ERDI-infrared sight line: compact enough for a hunting rifle, with detection to 1800 m on a 1.8 m × 0.5 m target.
The 1.8× – 7.2× optical magnification range is paired with a 0.39-inch 1024 × 768 OLED display, and the 48 mm eye relief with −5 to +5 diopter adjustment suits a wide range of shooters and platforms. Photo and video capture, Wi-Fi streaming and a Type-C interface are built in.
Why the EDRP635R
- Balanced 35 mm F1.0 optic — a 12.5° × 10° field of view that works both for scanning and for target engagement.
- 1000 m laser rangefinder with ± 1 m accuracy, displayed directly in the viewfinder.
- Up to 6 hours runtime from a single field-replaceable 18650 cell.
- IP67 sealed and 1000 g shock rated in a 516 g body measuring 205 × 77 × 71 mm.
- Photo, video, Wi-Fi and 32 GB storage built in for field documentation.
Technical Specifications
| Detector type | VOx uncooled, 8 – 14 μm |
|---|---|
| Resolution | 640 × 512 |
| Pixel pitch | 12 μm |
| NETD | ≤ 20 mK @ 25 °C, F#1.0, 25 Hz |
| Frame rate | 50 Hz |
| Objective lens | 35 mm / F1.0 |
| Field of view (H × V) | 12.5° × 10° (± 0.3°) |
| Magnification | 1.8× – 7.2× |
| Eye relief | 48 mm |
| Diopter adjustment | −5 to +5 |
| Detection range | up to 1800 m |
| Display | 0.39 inch OLED, 1024 × 768 |
| Laser rangefinder | 1000 m, accuracy ± 1 m |
| Wi-Fi | Built-in |
| Interface | Type-C |
| Recording | Photo / video |
| Storage capacity | 32 GB |
| Battery | 1 × 18650 (field replaceable) |
| Continuous operating time | up to 6 hours |
| Operating temperature | −20 °C to +50 °C |
| Shock resistance | 1000 g |
| Protection rating | IP67 |
| Weight | 516 g |
| Dimensions | 205 × 77 × 71 mm |
Which ERDI-infrared Thermal Sight Fits Your Application?
| Model | Resolution | Objective | Detection | LRF |
|---|---|---|---|---|
| EDRP635R | 640 × 512 | 35 mm F1.0 | 1800 m | 1000 m |
| HD650LRF | 640 × 512 | 50 mm F1.0 | 2600 m | 1200 m |
| HD1260LRF | 1280 × 1024 | 60 mm F1.0 | 3000 m | 1500 m |
| EDRP2-R650R | 640 × 512 | 50 mm F1.0 | 2600 m | 1000 m |
Frequently Asked Questions
What is the detection range of the EDRP635R?
Up to 1800 m on a 1.8 m × 0.5 m target. Recognition and identification ranges are shorter and depend on thermal contrast and atmospheric conditions.
What is the difference between the EDRP635R and the EDRP2-R650R?
They are two different models. The EDRP635R uses a 35 mm F1.0 objective with 1.8×–7.2× magnification and 1800 m detection. The EDRP2-R650R uses a 50 mm F1.0 objective with 1.8×–7.2× magnification and 2600 m detection.
How long does the battery last?
Up to 6 hours on a single 18650 cell. The battery is field replaceable, so spare cells extend operation indefinitely.
Is the laser rangefinder eye safe?
Yes. The rangefinder operates in the eye-safe 905 nm class 1 wavelength band.
Can I stream the image to a phone or tablet?
Yes. Wi-Fi is built in, and photo and video files are stored to the 32 GB internal memory.
Is OEM/ODM supply available?
Yes. ERDI-infrared supplies OEM and ODM customers — contact us with your platform and branding requirements.





