Extech EX470 True RMS Multimeter and IR Thermometer features: Non-contact InfraRed thermometer measures surface temperature of objects unsafe to contact or difficult to reach; InfraRed features 8:1 distance to spot ratio with 0.95 fixed emissivity; Input fuse protection and mis-connection warnings with audible and visible signals; Auto power off, Data Hold; True RMS AC measurements, etc.