This non-contact thermometer is designed to take body temperature with a 3cm-5cm distance from the forehead. Easy to use - aim to the body forehead and press the scan button LCD screen changes colour to reflect the temperature read. Green light for temperature below 37.5°C. Red light for temperature equal to and above 37.5°C. Features: 1. Large LCD screen with backlight indication: Green light for temperature below 37.5°C. Red light for temperature equal to and above 37.5°C. 2. Accurate result: High-precision infrared sensor so the measurement accuracy is controlled at ± 0.2 ℃. 3. Simple operation: one-button temperature measurement. 4. High safety performance: non-contact device for extra safety. 5. Instant reading in 1 second. Specifications: Battery operation：2xAA battery (not included) Material：ABS Dimensions：15x3.5x4.5CM Weight：66g Measring distance：3-5cm Temperature range: 32.0°C-42.9°C