The TK-4014-MED monitors Temperatures from -40 to +85°C (-40 to 185ºF) using a built-in sensor. It is a simple, cost-effective solution for accurately recording and verifying storage conditions for pharmaceuticals and vaccines in medical fridges and freezers. The unit is compact and lightweight with a flashing red indicator that can be programmed to indicate if temperatures have deviated from a predetermined range. Requires Tinytag Explorer software, and a USB cable.