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The TRV ND40 is a 4K digital day and night vision optic designed for long-distance outdoor observation in daylight and low-light conditions. It combines a low-light CMOS image sensor, 40 mm objective lens, digital magnification up to 16x, integrated laser rangefinder, infrared illumination, onboard recording, picture-in-picture viewing, Wi-Fi connectivity, and an electronic compass.
The ND40 provides full-colour imaging during the day and infrared-assisted viewing at night. Its listed observation ranges extend up to approximately 1,000 metres in daylight and 400 metres at night, depending on ambient light, infrared illumination, weather, target size, and image settings.
Key Features
- 4K low-light CMOS image sensor
- Day and night digital imaging
- 40 mm objective lens
- 4x, 8x, and 16x magnification settings
- Integrated laser rangefinder
- Listed ranging distance up to 1,200 yd
- Infrared illumination
- 60 Hz camera frame rate
- Photo and video recording
- Picture-in-picture viewing
- Wi-Fi and mobile application connectivity
- Five digital reticle patterns
- 2 MOA listed dot size
- Electronic compass
- Metric and imperial unit switching
- Ten menu languages
- 30 mm main-tube diameter
- Picatinny accessory interface
- IPX7 water resistance
- Three-year listed warranty
Product Specifications
- Brand: TRV
- Model: ND40
- Product Type: Digital Day and Night Vision Optic
- Image Sensor: Low-Light CMOS
- Sensor Resolution: Listed as 4K
- Exact Sensor Pixels: Confirm Before Publishing
- Camera Frame Rate: 60 Hz
- Objective Lens: 40 mm
- Lens Aperture: Confirm Before Publishing
- Focus Method: Side Focus
- Minimum Focusing Distance: Confirm Before Publishing
- Field of View: Confirm Before Publishing
- Magnification: 4x, 8x, and 16x
- Alternative Zoom Description: Continuous 4–16x, subject to confirmation
- Digital Zoom: Confirm Before Publishing
- Daytime Observation Range: Up to Approximately 1,000 m
- Nighttime Observation Range: Up to Approximately 400 m
- Laser Rangefinder: Integrated
- Listed Laser Range: Up to Approximately 1,200 yd
- Alternative Range Claim: Approximately 1,200 m
- Laser Accuracy: Confirm Before Publishing
- Infrared Illuminator: Supported
- Infrared Wavelength: Confirm Before Publishing
- Infrared Power: Confirm Before Publishing
- Infrared Adjustment Levels: Confirm Before Publishing
- Display Type: Confirm Before Publishing
- Display Resolution: Confirm Before Publishing
- Eye Relief: Approximately 50–100 mm
- Diopter Adjustment: Confirm Before Publishing
- Reticle Patterns: Five
- Dot Size: 2 MOA
- Adjustment Unit: MOA
- Focal Plane: Listed as First Focal Plane, subject to verification
- Picture-in-Picture: Supported
- Photo Capture: Confirm Before Publishing
- Video Recording: Supported
- Video Resolution: Confirm Before Publishing
- Audio Recording: Confirm Before Publishing
- Internal Storage: Confirm Before Publishing
- Memory Card Support: Confirm Before Publishing
- Wi-Fi: Supported
- Official Mobile App: Confirm Before Publishing
- Electronic Compass: Supported
- Unit Switching: Supported
- Menu Languages: Ten
- Tube Diameter: 30 mm
- Accessory Rail: Picatinny-Style
- Battery Type: Confirm Before Publishing
- Battery Capacity: Confirm Before Publishing
- Battery Runtime: Confirm Before Publishing
- Charging Interface: Confirm Before Publishing
- Protection Rating: IPX7
- Operating Temperature: Confirm Before Publishing
- Dimensions: Confirm Before Publishing
- Weight: Confirm Before Publishing
- Warranty: Three Years
- Country of Origin: China
4K Low-Light CMOS Sensor
The ND40 uses a listed 4K low-light CMOS image sensor.
A high-resolution digital sensor may provide:
- Detailed daytime imaging
- Improved low-light scene visibility
- Better image presentation during digital enlargement
- Clearer photo and video capture
- More visible environmental detail
- Full-colour operation when sufficient light is available
Before publication, confirm the exact sensor resolution, such as:
- 3840 × 2160
- 4096 × 2160
- Another manufacturer-defined 4K format
The sensor resolution, display resolution, saved-photo resolution, and video-recording resolution should be listed separately.
Day and Night Operation
The ND40 operates as a digital viewing system rather than a thermal imaging device.
During daytime use, it relies on visible and low-light illumination.
During nighttime use, it uses an infrared illuminator to provide light that can be detected by the CMOS sensor.
Unlike a thermal camera, digital night vision normally requires:
- Ambient light
- Moonlight
- Starlight
- Artificial illumination
- Infrared illumination
It does not detect heat signatures.
60 Hz Frame Rate
The listed camera frame rate is 60 Hz.
A higher refresh rate may provide smoother imaging during:
- Handheld movement
- Scanning
- Observation of moving subjects
- Digital zoom
- Video recording
Before publication, confirm whether 60 Hz applies to:
- Live-view display
- Camera sensor output
- Recorded video
- All image resolutions
- Day and night modes equally
40 mm Objective Lens
The ND40 includes a 40 mm objective lens.
This lens may provide a balance between:
- Light collection
- Field of view
- Subject detail
- Device size
- Long-distance observation
Before publication, confirm:
- Lens aperture
- Lens coating
- Minimum focusing distance
- Focus-ring range
- Daylight filter requirements
- Protective lens-cap inclusion
Side Focus
Side focus is listed as supported.
Confirm whether the side control adjusts:
- Objective focus
- Image sharpness
- Digital parallax correction
- Screen settings
- Another function
Objective focus and eyepiece diopter adjustment should be described separately.
Magnification Conflict
The specifications list:
- 4x
- 8x
- 16x
The description also states continuous zoom from 4x to 16x.
Before publication, confirm whether the device provides:
- Three fixed digital zoom steps
- Smooth continuous digital enlargement
- 4x optical base magnification plus digital zoom
- Automatic zoom linked to rangefinder data
Digital zoom enlarges the displayed image but does not increase native sensor detail.
Automatic Zoom Claim
The description states that the system automatically enlarges the image based on measured distance.
This feature should only be advertised if official documentation confirms:
- How the distance threshold is selected
- Available automatic zoom levels
- Manual override
- Whether it uses laser-ranging information
- Whether it operates in both day and night modes
- Whether the feature is included in all firmware versions
Daytime Observation Range
The listed daytime range is approximately 0–1,000 metres.
The final listing should clarify whether this means:
- Detection distance
- Recognition distance
- Clear observation distance
- Maximum viewing distance under ideal conditions
Actual daytime performance depends on:
- Atmospheric clarity
- Target size
- Lighting
- Contrast
- Lens focus
- Digital zoom
- Display resolution
Nighttime Observation Range
The listed nighttime range is approximately 0–400 metres.
Night performance depends heavily on:
- Infrared wavelength
- Infrared output power
- Beam focus
- Ambient light
- Weather
- Target reflectivity
- Camera sensitivity
The 400 m value should not be guaranteed without specified test conditions.
Integrated Laser Rangefinder
The ND40 includes an integrated laser rangefinder.
Two maximum-distance claims are supplied:
- 1,200 yd
- 1,200 m
These values are not equivalent.
Before publication, confirm:
- Correct maximum range
- Range on reflective targets
- Range on non-reflective targets
- Minimum ranging distance
- Measurement accuracy
- Laser wavelength
- Laser classification
- Single-ranging mode
- Continuous-ranging mode
- Available units
The laser-ranging distance should remain separate from day and night viewing distances.
Infrared Illuminator
The ND40 is listed with illumination support.
Before publication, confirm:
- Built-in or external IR illuminator
- Infrared wavelength, such as 850 nm or 940 nm
- Output power
- Brightness levels
- Adjustable beam focus
- Maximum practical illumination distance
- Replaceable or integrated design
- Independent power source
An 850 nm illuminator may provide greater range with a faint visible red glow, while 940 nm illumination is generally less visible but may have reduced range.
Display System
The display specifications are not supplied.
Before publication, confirm:
- OLED, AMOLED, LCOS, or LCD technology
- Display resolution
- Physical display size
- Brightness adjustment
- Contrast adjustment
- Colour modes
- Refresh rate
- Screen timeout
- Eye-protection settings
The display resolution should not be confused with the 4K sensor resolution.
Eye Relief
The listed exit-pupil or eye-relief distance is approximately 50–100 mm.
Before publication, confirm:
- Recommended eye position
- Eyepiece diameter
- Rubber eyecup inclusion
- Diopter range
- Whether full screen visibility is maintained throughout the stated range
Digital Reticle System
The ND40 includes five listed digital reticle patterns and a 2 MOA dot size.
Before publication, confirm:
- Available patterns
- Colour options
- Brightness levels
- Position adjustment
- Saved profiles
- Scaling during digital zoom
- Whether the reticle appears in recordings
The 2 MOA value should be verified at the native magnification and display setting.
First Focal Plane Claim
The device is listed as first focal plane.
Because the ND40 uses a digitally generated on-screen reticle, traditional optical focal-plane terminology may not apply in the same manner as it does to a conventional optical scope.
Publish this claim only if the manufacturer confirms that the digital reticle scales proportionally with magnification.
Picture-in-Picture Mode
Picture-in-picture mode may show an enlarged section of the scene while retaining the wider image.
This may help with:
- Detailed observation
- Maintaining scene awareness
- Using high digital magnification
- Monitoring a selected area
Confirm:
- PIP magnification
- Window position
- Window size
- Whether it appears in recordings
- Whether it works in day and night modes
Video Recording
The ND40 supports onboard video recording.
Before publication, confirm:
- Maximum video resolution
- Recording frame rate
- Video codec
- File format
- Audio recording
- Maximum clip duration
- Loop recording
- Date and time stamping
- Reticle visibility in video
Photo Capture
Photo capture is likely supported but should be verified.
Confirm:
- Still-image resolution
- File format
- Burst capture
- Date and time information
- Reticle overlay
- Image review
- Media export
Internal Storage
Storage specifications are missing.
Before publication, confirm:
- Built-in storage capacity
- MicroSD support
- Maximum supported card capacity
- Estimated recording duration
- File-overwrite behaviour
- Storage formatting
- Included memory card
Wi-Fi and Mobile Application
Wi-Fi connectivity may allow connection to a compatible smartphone or tablet.
Potential functions may include:
- Live viewing
- Photo transfer
- Video transfer
- Remote recording
- Settings adjustment
- Firmware updates
Before publication, confirm:
- Official application name
- Android support
- iOS support
- Connection range
- Account requirements
- Required permissions
- Media-download functions
Electronic Compass
The device includes a listed electronic compass.
Confirm whether the display shows:
- Cardinal direction
- Numeric heading
- Tilt angle
- Device orientation
- Calibration status
The final listing should explain whether manual compass calibration is required.
Unit Switching
The ND40 supports switching between measurement units.
Confirm whether the available options include:
- Metres
- Yards
- Kilometres
- Feet
Temperature units should not be mentioned unless the device includes temperature measurement.
Ten Menu Languages
The device supports ten menu languages.
Before publication, confirm the exact language list for the selected firmware.
Language availability may differ by region or production batch.
Battery System
Battery specifications are not supplied.
Before publication, confirm:
- Battery chemistry
- Built-in or removable design
- Battery capacity
- Number of cells
- Operating duration
- Full charging time
- USB interface
- External power-bank support
- Replaceable battery availability
- Cold-weather runtime
Actual battery life may vary with infrared illumination, Wi-Fi, recording, rangefinder use, display brightness, and ambient temperature.
30 mm Main Tube
The ND40 is listed with a 30 mm tube diameter.
Before publication, confirm:
- Exact clamping sections
- Required ring spacing
- Mounting length
- Included mounting rings
- Material
- Recommended mounting specification
Avoid claiming compatibility with every 30 mm mounting system without dimensional verification.
Picatinny Accessory Interface
A Picatinny-style rail is listed for compatible accessories.
Confirm:
- Rail location
- Number of slots
- Rail material
- Included accessories
- Maximum supported accessory weight
IPX7 Water Resistance
The listed IPX7 rating indicates resistance to temporary water immersion under defined laboratory conditions.
Before publication, verify:
- Test depth
- Test duration
- Required port-cover positions
- Battery-compartment sealing
- Exact tested model
- Warranty coverage
IPX7 does not provide a certified dust-protection rating.
Observation Claim at 100 Metres
The supplier states that small target details may be visible at approximately 100 metres.
This claim depends on:
- Target size
- Sensor resolution
- Digital magnification
- Focus
- Lighting
- Display resolution
- Atmospheric conditions
Avoid publishing a guaranteed result without standardized test images and conditions.
Suitable Applications
The TRV ND40 may be suitable for:
- Wildlife observation
- Farm and livestock monitoring
- Property monitoring
- Night-time outdoor observation
- Camping
- Remote-area exploration
- Search-support activities
- Security observation
- General low-light viewing
- Daytime long-distance observation
Actual performance depends on ambient light, infrared illumination, weather, target size, distance, and device settings.
Package Contents
Confirm whether the standard package includes:
- TRV ND40 digital night-vision device
- Rechargeable battery
- Battery charger
- USB cable
- Infrared illuminator
- Lens caps
- Eye cup
- Mounting rings
- Carrying case
- Cleaning cloth
- User manual
- Warranty card
Only verified accessories should appear in the final listing.
Warranty
The listed warranty period is three years.
Before publication, confirm coverage for:
- CMOS image sensor
- Internal display
- Laser rangefinder
- Infrared illuminator
- Battery
- Wi-Fi module
- Recording system
- Buttons and controls
- Environmental sealing
- Labour
- Return shipping
- Warranty exclusions
Important Use Information
Do not point the laser rangefinder or infrared illuminator toward people’s eyes, aircraft, moving vehicles, or reflective surfaces.
Avoid aiming the digital sensor directly at the sun, welding arcs, or intense lasers, as this may damage the imaging system.
Use only approved batteries, chargers, mounting hardware, cables, and accessories. Follow all applicable privacy, laser-safety, equipment, and local-use regulations.