Extech RHM15  

RHM15: Mini Hygro-Thermometer Monitor

Compact Indoor Meter for Monitoring Temperature and Humidity

The RHM15 is a mini hydro-thermometer monitor which measures humidity and temperature and displays it simultaneously. The RHM15 has a built in memory which stores maximum and minimum readings. The RHM15 features a low battery indication and comes with a built in stand, user's manual and LR44 battery. Measures in °F only.