Extech EX470 True RMS Multimeter and Infrared Thermometer Item is a Class II laser product, 1mW power output. Non-contact InfraRed thermometer measures surface temperature of objects unsafe to contact or difficult to reach Input fuse protection and mis-connection warnings with audible and visible signals Advanced capacitance, frequency and duty-cycle functions InfraRed features 8:1 distance to target ratio with 0.95 fixed emissivity True RMS AC measurements