Infrared temperature measurement provides safe, non-contact readings F/C selectable measurement Simple one-handed operation... just point and press button! Extremely rapid response time- just 500 msec for 95% response Model with laser sighting available to pinpoint your exact target These economical infrared thermometers provide non=contact measurement, so you can measure temperature from a safe distance. Quickly troubleshoot electrical equipment before problem areas create hazards, measure objects too hot to touch, check substances that need to remain contaminant free; measure moving objects ...the possibilities are endless! TempTestr IR features slot for lanyard connection and includes one 9 V battery.