This digital in/out thermometer simultaneously displays both the inside (-19.9 to 69.9°C) and outside (-49.9 to 69.9°C) and the max/min temperatures.
This digital indoor outdoor thermometer also features a programmable, audible high/low alarm (remote probe only).
Each in/out is powered by a single MN2400 (AAA) 1.5 volt battery and is supplied with a small, water resistant, detachable remote probe with a two metre PVC lead for outside temperatures.