Function: Non-contact temperature measurement by detecting infrared radiation emitted from objects.

Key Components:

• Infrared sensor (e.g., thermopile)
• Optics (lens/filter for focusing IR energy)
• Signal amplifier and ADC
• Microcontroller for processing (e.g., STM32, AVR)
• Display (LCD/OLED) or output interface (UART, I2C)

Typical Specs:

• Temperature Range: -50°C to +500°C (varies by model)
• Accuracy: ±1°C or ±1%
• Emissivity Adjustment: 0.1–1.0
• Response Time: <500 ms

Applications: Medical (fever screening), industrial, HVAC, food safety.

Design Tips: Use calibrated blackbody source for accuracy; minimize ambient IR interference.