Ideal for energy auditors, building inspectors, HVAC technicians, electricians, manufacturing technicians, food processing inspectors and homeowners; in scanning mode, color of light panel (red, green or blue) and beeper speed (fast, silent or slow) indicate whether target is above, within or below reference temperature setpoint bandwidth; choice of three setpoint bandwidths 1, 5 and 10F (0.5, 3, 5.5C); squeezing and holding trigger captures reference temperature and launches scan mode; Unique Star Burst laser targeting system helps approximate target/spot size; large backlit LCD; auto power off; NIST calibration is available.