The TN1 is a non-contact infrared thermometer, simply aim the thermometer at the target and press the measurement button to display the surface temperature. The TN1 indicates temperature over the range of -22 to +110°C with a resolution of 0.1°C. The distance to target ratio is 1:1 therefore the thermometer should be positioned as close to the target as possible. The TN1 incorporates max, min and lock (continuous) functions and is °C and °F switchable. The unit is supplied with a default emissivity of 0.95 the emissivity can be changed from 0.01 to 1. • Temperature Range of -22 to +110°C • 0.1°C or °F (switchable) resolution • Maximum, minimum & lock functions • Non-contact infrared thermometer • 1:1 optics ratio