CH20 Infrared Thermal Imager 256x192 Resolution Handheld IR Thermal Imaging Camera ‑20‑450℃ Temperature Range Item Type: Infrared Thermal Imager Model: CH20 Thermal Imaging Resolution: 256 x 192 Temperature Range: -20℃ to +450℃ Lens Focal Length: 3.5mm Laser Indication: Not Support Free Spot Temperature Measurement: Support Temperature Measurement Modes: Center Point, Cold Hot Point, 1 Line Temperature Measurement, 1 Area Temperature Measurement Detector Type: Uncooled Vanadium Oxide Focal Plane Detector Pixel Size: 12μm Spectral Range: 8μm-14μm Thermal Sensitivity: <40mK at f/1.0 Thermal Imaging Field of View Angle: Horizontal: 37.8°, Vertical : 50.6° Thermal Imaging Focus Mode: Fixed Focus Thermal Imaging Close Up Distance: 0.5m Lens Aperture: F1.0 Thermal Imaging Noise Reduction: 2D 3D Noise Reduction Color Palette: Support white hot, black hot, rainbow, iron red, 4 color adjustable Temperature Measurement Accuracy: ±2℃ or ±2% of the Reading Display Size: 2.4 Inch LCD Audible And Visual Alarm: Support buzzer sound alarm Alarm Linkage: Support over temperature alarm linkage buzzer and picture catching Storage Function: Support micro memory card storage, 256G (not included) Fault Detection: Memory card status detection, storage space detection Cold Hot Spot Tracking: Support the hottest and coldest spot automatic tracking in the whole screen USB Port: Micro USB Power Supply: DC5V or built in battery power supply Battery: 1 x 500mAh Rechargeable Lithium Battery (built in battery) Power Consumption: <1W Standby Time: >8h Operating Temperature: -20℃-50℃ Protection Grade: IP54