For HVAC/R. Temperature Range: -40 to 302 F (-40 to 150 C), Probe Length: 2.5 in., Sampling Rate: 1 sec, Resolution: plus/minus 0.1, Accuracy: plus/minus 1.8 F (plus/minus 1 C), Data Hold Switch, Pocket Clip, On/Off Switch, Auto Power Off, F/C Switch, Power Source LR44 battery (included). Includes yellow case, magnet, Velcro strap.