ADJUSTABLE EMISSIVITY& TEMPERATURE ALARM-The laser thermometer gun has an emissivity range of 0.10 to 1.00 for precise readings across different surfaces and conditions; Features with high/low temp warning, the indication of temperature gun turns red when test temperature exceeds the high/low limited setting.HIGH ACCURACY-French HTU20 temperature sensor and 13 Points Laser Guidance providing accurate readings and safe aiming, sense the ambient temperature accurately.The Distance to Spot Ratio is 12:1, meaning it can accurately measure targets at greater distances compared to most other laser thermometer,which can reads value of high accuracy up to 1.5%.Response time within 0.5 seconds.CUSTOMER SERVICE - provides 24 months after-sale service and lifetime technical support, 7/24 customer service. If the temperature gun is damaged within 24 months of purchase, just contact us and we replace it for free! Package includes thermometer,K-Type Thermocouple Probe, batteries and user manual.CONVENIENT FUNCTION-HD colorful VA display with backlight can better distinguish the data at a glance; HOLD data function; Environment humidity; High/Low temperature alarm; Unit switch (/); Low battery indication and auto-off function in 30 seconds to extend battery life; Response Time: