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GM550 Digital Non-Contact -50 To 550 degree LCD IR Laser Infrared Thermometer Themperature Measurement Electronic Point Gun New Features: 100% BRAND NEW! Simple One-Handed operation. Red Laser Power : less than 0.5 MW oC / oF Select Switch Data Hold Function Laser Target Pointer ON/OFF selection Backlight ON/OFF selection Auto Power Shut Off in 7 seconds without any operation Specification: Temperature range: -50~550oC ( -58 ~ 1022oF ) Accuracy: ± 1.5% or 1.5 oC Resolution: 0.1oC ( 0.1oF ) Response time: 500mSec,95% response Emissivity: 0.95 Preset Distance to Spot Size: 12:1 Operating Humidity:10-95%RH non-condensing, up to 30oC (86oF) Spectral Response: 8-14um Storage temperature: -20~ 60oC ( -4~140oF ) Operating temperature: 0~40oC ( 32~104oF ) Use Power: 9V battery(not included) Weight: 149g Size: 15.3 x 10 x 4.3cm Packing content: 1 x Infrared Thermometer Please download the USER GUIDE in https://app.box.com/s/5f86kpoqzad5llqmt8z3