EYE III Series Review: Compact Thermal Monoculars with AMOLED Display, Wi-Fi & 1800m Detection

Introduction to the EYE III Series

The InfiRay Outdoor EYE III Series is a line of compact thermal imaging monoculars built for professionals and enthusiasts needing lightweight, high-resolution, all-weather viewing solutions. With models like EL25, EL35, and EH35, this series offers premium AMOLED visuals, built-in memory, and seamless Wi-Fi streaming for a complete field experience.

Lightweight, Handheld, and Functional

Designed for one-handed operation, the EYE III units are smaller than most monoculars but deliver powerful performance in night surveillance, wildlife tracking, and search & rescue missions.

Ideal Users and Applications

SAR teams locating warm targets in challenging environments

Hunters needing to locate game through fog or brush

Law enforcement seeking portable thermal optics

Outdoor researchers observing nocturnal animals

Key Features of the EYE III Series

Thermal Sensor and Imaging Specs

384×288 and 640×512 Options

  • EL25 / EL35: 384 × 288 resolution
  • EH35: 640 × 512 resolution

All use InfiRay’s 12μm VOx detectors, offering excellent thermal contrast for human and animal identification.

NETD ≤25mK for Clear Imaging

Each unit delivers <25mK thermal sensitivity, ensuring accurate detection even when temperature differences are subtle—ideal for bad weather or dense forest conditions.


Lens, Field of View, and Detection Range

25mm to 35mm Lenses

  • EL25: 25mm
  • EL35 / EH35: 35mm

The F1.0 lens system allows maximum infrared transmission, enhancing target detection clarity.

Up to 1800m Detection

ModelDetection Range (Human Size)
EL251300m
EL351800m
EH351800m

Display and Viewing Comfort

AMOLED 1440 × 1080 Screen

The EYE III series features a 1440×1080 high-res AMOLED display, offering crisp visuals with superior contrast. Color palettes include:

  • White Hot
  • Black Hot
  • Red Hot
  • Rainbow

Glasses-Friendly Eye Relief

A 20mm eye relief and flexible eyeshade accommodate glasses wearers without sacrificing the field of view.


Magnification and Digital Zoom

  • EL25: 2.5x–10x
  • EL35: 3.5x–14x
  • EH35: 2.0x–8.0x

Up to 4x Zoom

Zoom increments are available in 0.5x steps, accessible via the rotary controller.


Recording and Storage Capabilities

32GB Internal Memory

Capture every moment with:

  • Photo snapshots
  • Video recording
  • Recoil-activated video
  • Audio recording via built-in mic

Files are saved using timestamped filenames (e.g., PIC_122504.jpg, VIDEO_122504.mp4).


User Interface and Button Layout

Controller Wheel & Camera Button

  • Rotary dial for menu navigation and zoom
  • Single-button camera control
  • Shortcut menu for quick contrast, sharpness, and brightness edits

Ultra-Clear Mode and Image Enhancements

Enable Ultra-Clear Mode during rain or fog for better edge detail and contrast. Users can also adjust:

  • Image sharpness (1–4)
  • Screen brightness (1–6)
  • Image contrast (1–6)

Wi-Fi and App Integration

InfiRay Outdoor App Streaming

Connect via Wi-Fi to stream video and photos directly to your smartphone.

Rename and Secure Wi-Fi Connections

Customize SSID and password from the app. Supports real-time remote control and media download.


Power System and Charging Features

Built-In Cold-Resistant Li-Ion Battery

Each monocular runs on a non-removable 4.2Ah Li-ion battery, delivering up to 8 hours of use at 22°C.

Type-C Charging and Status Monitoring

  • LED indicator (red = charging, green = full)
  • Lightning icon appears when using external power supply

Interconnection Between Devices

Dual Monocular Sync

Connect two EYE III units to mirror one device’s screen on another. Great for training, team ops, or passive viewing.


PIP, Compass, Calibration, and Extras

  • Picture-in-Picture (PIP) mode for a 2× inset zoom
  • Digital compass with calibration support
  • Auto calibration for internal sensor correction
  • Microphone control toggle
  • Lens Cap Shortcut: cover to calibrate, standby, or shut down

Protection and Build Quality

Operating Temp: -20°C to +50°C

IP67 waterproof and dustproof

Weight <500g

Dimension: 54×54×203mm

Specifications Table: EL25 / EL35 / EH35

FeatureEL25EL35EH35
Resolution384×288384×288640×512
Lens Size25mm35mm35mm
Detection Range1300m1800m1800m
FOV (°)10.5×7.97.5×5.712.5×10
Magnification2.5–10x3.5–14x2.0–8.0x
DisplayAMOLED 1440×1080AMOLED 1440×1080AMOLED 1440×1080
Battery LifeUp to 8hUp to 8hUp to 8h
Memory32GB32GB32GB
Wi-Fi & AppYesYesYes
Weight<500g<500g<500g
IP RatingIP67IP67IP67

Pros and Cons of the EYE III Series

Positive
  • Ultra-light and handheld
  • AMOLED clarity with customizable palette
  • 8-hour operation with fast Type-C charging
  • Wi-Fi and smartphone integration
  • Built-in photo, video, and audio recording
  • IP67 protection and under-500g weight
Negatives
  • Internal battery is non-removable
  • No built-in laser rangefinder
  • Max zoom limited to 4×

Use Case Scenarios

Field training and scouting with dual interconnectivity

Wildlife tracking in dense brush

Nighttime game identification

Border patrol or surveillance missions

Final Verdict: Is EYE III Worth It?

The InfiRay EYE III Series sets the standard for ultra-portable thermal monoculars with features usually reserved for heavier, pricier models. With its clear AMOLED screen, smart controls, video recording, and inter-device streaming, it’s perfect for anyone needing performance in a compact footprint.

If you’re a night hunter, mobile observer, or tactical responder, the EYE III delivers clarity, comfort, and control in one robust unit.

FAQs: EYE III Series

How much media can I store on 32GB?

Roughly 1,000 photos or 5+ hours of video, depending on quality.

Can I zoom during video recording?

Yes, zoom works during recording and is reflected in the footage.

Can I pair two EYE III units together?

Yes, via interconnection mode for screen sharing.

Does it support app firmware updates?

Yes, download firmware to the “update” folder and update via the menu.

Can I view footage while charging?

Yes, connect via Type-C and stream media while charging simultaneously.


4.6 Total Score

9.2User's score
Design
10
Usability
9
Price
8
Features
10
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