The ThermTec Cyclops 335L 3.0 Thermal Monocular (SKU: OPTT-CYCLOPS335L-3) is a handheld thermal imaging spotter designed for nocturnal wildlife observation, feral pest management, and property monitoring. Featuring a 384 × 288 uncooled VOx sensor with sub-15 mK NETD thermal sensitivity and a 35 mm focal length objective lens, it delivers clear thermal target detection up to 1,800 metres. The integrated 1,000 m laser rangefinder (LRF) provides immediate distance measurement directly on the 0.5-inch 1600 × 1200 AMOLED display, eliminating external rangefinding modules.

Key Features

• Integrated Laser Rangefinder: Measures target distance accurately up to 1,000 metres without adding external bulk.
• High-Sensitivity Thermal Sensor: 384 × 288 resolution with 12 µm pixel pitch and sub-15 mK NETD for clear heat signature separation in low-contrast environments.
• Extended Run-Time: Internal rechargeable lithium-ion battery provides up to 12 hours of continuous operation per charge via standard 5V USB Type-C.
• Ergonomic Handheld Operation: Compact 181 × 62 × 63 mm footprint weighing approximately 470 g, equipped with a one-handed central joystick control.
• All-Weather Reliability: IP67-rated housing protected against dust ingress and water immersion, operational from -20 °C to +50 °C.
• Digital Zoom & Connectivity: Smooth continuous digital zoom up to 17.2× paired with onboard video recording and two-way Wi-Fi streaming.

Specifications

• Thermal Sensor: 384 × 288 uncooled VOx, 12 µm, sub-15 mK NETD
• Frame Rate: 50 Hz
• Objective Lens: 35 mm focal length
• Display: 0.5-inch AMOLED, 1600 × 1200 resolution
• Magnification: Base optical magnification with continuous digital zoom up to 17.2×
• Detection Range: Up to 1,800 m (standard 1.7 m × 0.5 m target)
• Laser Rangefinder Range: Up to 1,000 m
• Battery Life: Up to 12 hours continuous use (internal Li-ion)
• Charging Interface: USB Type-C (5V DC)
• Dimensions: 181 × 62 × 63 mm
• Weight: ~470 g
• Environmental Rating: IP67

Who is the Thermtec Cyclops 335l 3.0 Thermal Monocular for?

• Feral pest controllers — utilizes the integrated 1,000-metre laser rangefinder and 35 mm objective lens to scan paddocks and instantly gauge shooting distances to feral pigs and foxes across long-duration night operations supported by 12 hours of continuous battery life.
• Deer stalkers — benefits from the sub-15 mK sensitivity 384 × 288 VOx sensor and lightweight 470 g handheld form factor, allowing quiet thermal scanning of scrub and timber lines during mobile stalks without excessive pack weight.
• Rural property owners — relies on the 12-hour internal battery run-time and 384 × 288 sensor resolution to conduct extended boundary inspections, security patrols, and livestock checks around farm infrastructure.

Less suitable for: Positive target identification beyond 300 to 400 metres, which requires a 640 × 512 thermal sensor monocular, or direct firearm mounting, which requires a dedicated recoil-rated thermal weapon sight.