The Exo Terra Digital Thermo-Hygrometer combometer  is a combination thermometer and hygrometer. This 2-in-1 precision instrument is equipped with a remote combined sensor for accurate temperature and humidity indication, and has a programmable minimum/maximum memory setting which can be controlled with a single button. Durable and easy to use, the Exo Terra Digital Thermo- Hygrometer can be installed in one of three ways with Velcro (included), with a screw, or by simply sliding it into position on top of the Exo Terra Compact Top or Dual Top Canopy. Accurate temperature and humidity indication Single button operated Combined remote sensor for temperature and humidity Minimum / Maximum memory Fits the Exo Terra Compact Top and Dual Top Canopy