The Guide TJ660LZ is built for outdoor users who need flexibility across changing observation distances without carrying multiple optics. Its dual-focus 20mm and 60mm lens system lets you move quickly between wide-area scanning and detailed long-range viewing, making it useful for everything from broad terrain searches to identifying distant heat signatures in tighter detail.

At the centre of the system is a 640x512 thermal sensor with a NETD below 20mK, allowing the monocular to distinguish finer temperature differences in difficult weather conditions. This improves image clarity when fog, rain, heavy humidity, or low thermal contrast would normally reduce visible detail. Combined with the 12 micron pixel pitch and 50Hz refresh rate, movement appears smoother and targets remain easier to track across uneven terrain.

The Full HD 1920x1080 AMOLED display gives the TJ660LZ a noticeably sharper viewing experience than lower-resolution displays commonly found in older thermal devices. Guide compares the viewing effect to watching a 70-inch home theatre screen from 2.5m (8.2ft) away, helping reduce eye fatigue during longer observation sessions.

For extended field use, the monocular uses two replaceable 18650 batteries and can operate for up to 10 hours under typical conditions. Intelligent sleep mode automatically powers the unit down when not actively in use, helping conserve battery life without needing constant manual adjustment. The control layout is designed for blind operation in darkness and can be adapted for both left-handed and right-handed users.

The integrated laser rangefinder measures distances up to 1000m (1090yd), while onboard recording supports both video and audio capture directly to the internal 64GB memory. Built-in WiFi, Bluetooth, compass, and gyroscope functions expand connectivity and navigation support for users spending extended time in the field.

Key Features

• Dual Focus Lens System: Switches between 20mm and 60mm focal lengths for broad area scanning or detailed long-range observation without changing devices.
• NETD Below 20mK Sensor: Detects subtle temperature differences for sharper thermal detail in rain, fog, humidity, and low-contrast terrain conditions.
• 640x512 Thermal Resolution: Produces detailed thermal imagery with improved target separation and recognition across varied outdoor environments.
• Full HD AMOLED Display: The 1920x1080 AMOLED display creates a cleaner and more immersive viewing experience with strong contrast and smoother detail.
• Integrated Laser Rangefinder: Measures distances up to 1000m (1090yd) for more accurate field assessment and long-distance observation.
• Long Detection Capability: Detects heat signatures at distances up to 3100m (3350yd) when using the 60mm lens configuration.
• Blind Operation Controls: The button layout and battery design support easier operation in darkness without needing constant visual reference.
• Intelligent Sleep Mode: Automatically switches between sleep and wake modes based on device orientation to help extend battery life.
• Audio Video Recording: Captures both video and sound directly to the built-in 64GB internal storage for later review.
• IP67 Weather Protection: Designed to handle wet, dusty, and demanding outdoor conditions during extended field use.