ZH-TPH21-3AXF Handheld Thermal Imaging Thermometer for Temperature Measurement Thermal Imaging Image: - Original resolution: 256 × 192, high-sensitivity vanadium oxide uncooled detector - Supports timed and temperature difference shutter correction - Supports 3D noise reduction function and image detail enhancement function - Supports 4 adjustable pseudo-color modes Temperature Abnormality Alarm Function: - Supports temperature measurement at the central point, maximum temperature, and minimum temperature - Temperature measurement range: -20 °C~350 °C - Temperature measurement accuracy: ±2 °C or ±2% of the reading (whichever is greater) System Functions: - Standby time > 8 h, supports automatic shutdown power-saving mode - Picture storage with full-screen temperature measurement information, supports offline temperature measurement analysis (used in conjunction with the client) Specification Parameters Thermal Imaging: - Sensor type: Uncooled vanadium oxide microbolometer - Detector resolution: 256 × 192 - Response band: 8~14 μm - NETD (Noise Equivalent Temperature Difference): < 50 mk (@25 °C, F#=1.0) - Maximum image size: 240 × 320 - Minimum imaging distance: 0.3 m - Field of view: 37.2° × 50.0° - Frame rate: 25 Hz - Pixel size: 12 μm - F-number: F1.0 - Minimum measurement distance: 0.3 m - Temperature measurement units: Celsius, Fahrenheit, Kelvin - Temperature measurement range: -20 °C ~ 350 °C - Accuracy: ±2 °C or ±2% of the reading (whichever is greater) - Spatial resolution (IFOV): 3.3 mrad Image Display: - Display: 3.2-inch LCD screen (240 × 320) - Image modes: High-temperature highlighting, white hot, black hot, iron red, rainbow - Maximum image size: 240 × 320 - Frame rate: 25 Hz - Image format: JPEG image with temperature measurement information, supports offline analysis by the client System Functions: - Laser indication: Supported - UVC screen projection: Supported - Lighting: Not supported - WIFI: Not supported - Alarm linkage: Supports sound alarm and image alarm - Temperature measurement rules: 6 temperature measurement points (central point, maximum temperature, minimum temperature, and 3 custom points) - Storage: 4 GB built-in emmc - Power interface: Type-C direct charging - Battery type: Rechargeable lithium-ion battery - Charging time: < 3 h @25 °C - Battery working time: > 8 h @25 °C - Power management: Adjustable; off, 5 minutes, 10 minutes, 20 minutes System Parameters: - Operating temperature and humidity: -10 °C~50 °C, ≤95% - Storage temperature and humidity: -20 °C~60 °C, ≤95% - Protection level: IP54 - Drop resistance level: 2 m - Weight: 380 g (including battery) - Dimensions: 221.7 mm × 73.5 mm × 80.5 mm - Accessories: 5V power adapter, USB cable, wrist strap lanyard, instruction document