Precise infrared thermometer, 3 colors indicator with audio and visual fever warning. Quick measure in 1s, 100 groups data storage. Developed for accurate, safe and fast temperature measurements. Features: Infrared Measurement: Quick measure in 1s. Accurate and reliable with upgraded algorithm and optimized temperature calibration. Intelligent Alarm: Tri-colored indicator in green, yellow and red, audio and visual fever warning. Memory Function: 100 groups of measurement data memories, convenient to recall and track the temperature changes. Power Saving: The device will enter standby mode automatically in 30s if there is no operation. Dual Power Supply Modes: Insert 2 * AAA Batteries (NOT INCLUDED) or plug in type-c cable to work. Versatile: Celsius and Fahrenheit unit switchable, sound and mute optional. Non contact design safe to use. Specifications: Material: ABS Color: White Input: DC 5V / DC 3V Screen Type: LCD Display Accuracy: ±0.2℃ (0.4℉) Unit: ℃/ ℉ Memory: 100 Groups Infrared Measuring Range: 32.1~43.0℃ Induction Distance: 8-10cm Measuring Time: 1s Auto Standby Time: within 30s High Temp. Alarm: Indicator & Voice Tri-colored Display: Green: 32.1℃≤T