Enable users to observe distant targets and accurately measure their distance
The TFN AS Series combines high-performance binocular optics with an integrated laser rangefinder in a single compact device. Designed for professional field operations, it delivers clear long-distance observation and accurate distance measurement without the need for reflectors or additional equipment.
With a field of view of approximately ≥92° × 35°, the TD401 significantly expands peripheral awareness compared to traditional dual-tube systems. It is engineered for high-mobility tactical operations where speed, awareness, and reduced head movement are critical.
- 8×42 Professional Binocular Optics
- Integrated Laser Rangefinder
- Up to 1800 m Measurement Range
- ±1 m Distance Accuracy
- Reflector-Free Target Measurement
- Fully Multi-Coated BAK4 Prism System
- Bright Low-Light Performance
- Eye-Safe Laser Technology
- Auto Power-Off Battery Management
- Tripod Mount Compatible
- Operating Temperature: -20°C to +60°C
Professional Observation and Distance Measurement in One Device
The TFN AS Series eliminates the need to carry separate binoculars and laser rangefinders. Users can identify, observe, and measure targets through a single optical system, improving operational efficiency while reducing equipment load.
Whether conducting infrastructure inspections, monitoring large outdoor areas, or performing tactical observation tasks, operators can obtain real-time distance data without interrupting observation.
Accurate Long-Range Measurement Without Reflectors
The integrated laser rangefinder delivers precise distance measurements from 5 meters to as far as 1800 meters depending on the model and target conditions.
Unlike traditional surveying systems that require reflective prisms, the AS Series measures natural and man-made targets directly, including:
- Buildings
- Utility structures
- Trees
- Terrain features
- Vehicles
- Equipment
Distance readings are displayed directly within the field of view, enabling faster decision-making in the field.
High-Definition Optics for Reliable Field Observation
The optical system combines 8× magnification, 42 mm objective lenses, BAK4 prisms, and fully multi-coated optics to deliver bright, sharp, and high-contrast images.
The large objective lens gathers more light than compact binoculars, helping maintain image clarity during early morning, late evening, and overcast conditions.
Optimized for Extended Outdoor Operations
Field missions often require long observation periods and limited access to replacement batteries.
The AS Series incorporates an automatic power-saving function that shuts down the rangefinder electronics when not in use while keeping the binocular ready for observation.
Powered by a single CR2 3V lithium battery, the system supports extended deployment in remote environments.
Rugged Construction for Demanding Environments
Built for professional outdoor applications, the AS Series features a durable housing designed to withstand challenging environmental conditions.
The instrument remains operational across a wide temperature range from -20°C to +60°C and provides a secure grip for use in demanding field environments.
Stable Observation with Tripod Compatibility
For long-duration monitoring missions, the AS Series can be mounted on a standard tripod using its integrated mounting interface.
Tripod deployment minimizes operator fatigue and improves observation stability during extended surveillance, monitoring, or inspection tasks.
| Parameter | Specification |
| Measuring Range | AS12: 5-1200 m. AS15: 5-1500 m. AS18: 5-1800 m |
| Range Accuracy | ±1 m |
| Magnification | 8x |
| Objective Lens Diameter | 42 mm |
| Field of View | 7° |
| Exit Pupil Diameter | 7 mm |
| Eye Relief (Eye Point) | 16 mm |
| Rangefinder Display | In-view LCD (field of view display) |
| Focusing Method | Central shaft focusing |
| Meter/Yard Display | Switchable |
| Operating Temperature | -20°C to +60°C |
| Product Dimensions | 173 x 135 x 64 mm |
| Product Weight | 1279 g |
| Battery Type | CR2-3V lithium battery |
| Tripod Mount | Supported |
| Accessories Included | Carrying case, strap, manual, warranty card, lens cleaning cloth |
Applications
The TFN AS-Series provides military personnel and defense organizations with a lightweight solution for observation and distance assessment in field environments.
Border Surveillance
Observe and range vehicles, personnel, and terrain features along border areas and security perimeters.
Tactical Reconnaissance
Support visual reconnaissance missions by identifying and measuring distances to objects of interest before movement or engagement planning.
Observation Posts
Enable long-term monitoring of designated sectors from fixed or temporary observation positions.
Force Protection
Assist security teams in assessing stand-off distances around facilities, checkpoints, and military installations.
Frequently Asked Questions
A laser rangefinder binocular combines traditional binocular observation with an integrated laser distance measurement system, allowing users to observe and measure targets using a single device.
Depending on the model, the AS Series can measure distances from 5 meters up to 1800 meters.
No. The laser rangefinder is designed to measure natural and man-made targets without the need for reflective prisms or markers.
The AS Series features 8× optical magnification with a 42 mm objective lens.
Yes. The AS Series uses eye-safe laser technology designed for normal operational use.