RM-4IN1-625 Four-in-One Thermal Monocular
U.S. export-controlled. Thermal and night-vision devices are subject to U.S. ITAR/EAR controls and are not exportable outside the United States. By checking the box you confirm you are a U.S. person purchasing for end-use within the United States. See our Export Compliance policy.
⚠Check the U.S. export compliance box above to enable Add to cart
In stock
Ships directly from Onick — lead times vary by brand, and tracking is emailed as soon as they ship.
The Onick 4-IN-1 is a compact multi-function thermal monocular that puts a thermal channel, GPS, an electronic compass, an integrated laser rangefinder and Wi-Fi image transmission in one IP67 body. Built for search and rescue, patrol work and long days of outdoor observation. Covered by Onick's 18-month limited warranty against manufacturing defects.
Read the full overviewU.S. shipping only. Orders deliver to addresses in the United States — we don't ship internationally or to freight forwarders. Shipping Policy
Overview
The Onick 4-IN-1 is a compact multi-function thermal monocular that puts a thermal channel, GPS, an electronic compass, an integrated laser rangefinder and Wi-Fi image transmission in one IP67 body. Built for search and rescue, patrol work and long days of outdoor observation. Covered by Onick's 18-month limited warranty against manufacturing defects.
Questions & Answers
Ask a question — get an instant answer from our optics team.
No questions yet — be the first to ask.
Why This Product
The RM-4IN1-625 Four-in-One Thermal Monocular is a handheld thermal monocular designed for fast target spotting and scouting on the move. Its 640px sensor delivers clear, reliable thermal imagery in most conditions. Backed by 18-month warranty and Thermisight's veteran-owned service team.
Expert Video Reviews
Watch expert reviews on YouTube
See the RM-4IN1-625 Four-in-One Thermal Monocular in action — hands-on reviews, field tests & comparisons
Field Footage Gallery
No field footage yet for this product.
Be the first to share your thermal hunting clips and help fellow hunters see what this sensor can do in the field.
Onick Support
RM-4IN1-625 Four-in-One Thermal Monocular
Factory support, warranty service, and replacement parts for this model come directly from Onick.
Financing Calculator
- Purchase price
- $2,465
- APR
- 0%
- Down payment
- $0
- Total of payments
- $2,465
Estimates only. Subject to credit approval at checkout. Select "Pay over time" during checkout to apply.
Complete your kit
Compatible accessories for your Onick RM-4IN1-625 Four-in-One Thermal Monocular.
Key specifications
- Detector
- 640×512
- Detection range
- —
- Magnification
- —
- NETD
- —
- LRF
- —
- Refresh
- —
Sample Thermal Images
Real thermal imaging samples captured with this camera — swipe to browse, tap any image to view full size.
Compare detection range & sensitivity
Side-by-side with similar thermal monocular optics. Lower NETD = better thermal sensitivity; higher detection range = farther identification.
| Spec |  |  |  |  |  |
|---|---|---|---|---|---|
| Detection range | — | 3,100 yd | 2,843 yd | 2,600 yd | 2,600 yd |
| Sensitivity (NETD) | — | 18 mK | — | 15 mK | 20 mK |
| Sensor res. | 640px | 1280px | 640px | 640px | 640px |
| Objective | — | 60mm | 50mm | 50mm | 50mm |
| LRF | No | Yes | Yes | Yes | Yes |
| Price | $2,465 | $7,495 | $2,395 | $4,995 | $2,745 |
Best-in-row values are shown in accent. Your current optic is highlighted.
Still weighing the RM-4IN1-625 Four-in-One Thermal Monocular? Try our 60-second AI Buyer's Guide
Start now →More from Onick
RM-650L Thermal Riflescope 640 1-8x 50mm
Onick
$2,300
RM-635 Thermal Riflescope
Onick
$1,985
RM-225L Thermal Riflescope 256 1-4x 25mm
Onick
$1,255
RM-335L Thermal Riflescope 384 1-4x 35mm
Onick
$1,675
RM-635L Thermal Riflescope
Onick
$2,090
RM-225 Thermal Riflescope 256 1-4x 25mm
Onick
$1,150
You might also need
Cross-division gear for overlapping missions — Thermisight Drone
China- Detector
- 640×512
- Range
- —
- NETD
- —
- Flight time
- 45 min
- Zoom
- 35×
- Frame rate
- —
or $1,607/mo · 0% APR
China- Detector
- 640×512
- Range
- —
- NETD
- 50 mK
- Flight time
- 40 min
- Zoom
- —
- Frame rate
- —
or $323/mo · 0% APR
China- Detector
- 640×512
- Range
- —
- NETD
- —
- Flight time
- 42 min
- Zoom
- —
- Frame rate
- —
or $1,050/mo · 0% APR
Related guides
All guides
Thermal Binoculars Buyer Guide: Setup, Field Scanning, and AGM Binocular Options
Why thermal binoculars offer advantages over monoculars for extended observation, how to configure interpupillary distance and eyepieces, field scanning techniques, and what to verify before choosing an optic.
4 min read
256 vs 384 vs 640: Which Thermal Sensor Do You Need?
A definitive, field-tested guide comparing 256, 384, and 640 thermal sensor resolutions. Learn how pixel count, objective focal length, and NETD dictate real-world identification range—and when spending more won't help your hunt.
4 min read
Hunting Thermal and Night Vision Buyer's Review Guide
A review-backed buying guide evaluating thermal scopes, clip-ons, monoculars, and night vision optics for U.S. hunters based on hands-on professional testing and owner field reports.
4 min read
Holiday Gift Guide: Thermal Optics for Hunters
What actually makes a good thermal gift for a hunter, which optic type suits which kind of hunting, and the questions to ask before you buy.
5 min read
Care & Maintenance
Lens Care
- •Clean the objective lens with a microfiber cloth and optical-grade solution only.
- •Blow off dust before wiping to prevent scratching the germanium lens.
- •Keep the lens cap on when stored in a pack or pocket.
Battery & Power
- •Remove batteries for storage longer than 30 days.
- •Carry a spare battery in cold weather — lithium cells drain faster below 32°F.
- •Use only manufacturer-approved batteries to avoid warranty void.
Storage & Environment
- •Store in its case in a dry, temperature-controlled environment.
- •Avoid prolonged exposure to direct sunlight when not in use — the sensor can retain heat and affect calibration.
- •Allow the optic to acclimate to ambient temperature before use after moving between extreme environments.
Manuals & spec sheets
Onick does not publish this model's manual publicly — ask our team and we will send the current manual and spec sheet for the RM-4IN1-625 Four-in-One Thermal Monocular.
Ask our team for this manualReviews
No reviews yet.
We use cookies for your cart and sign-in, and — with your permission — analytics and ads. Cookie Policy