The Exo Terra Digital Thermo-Hygrometer is a 2-in-1 precision instrument, equipped with a remote combined sensor for accurate temperature and humidity indication. This precision instrument 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 with hook & loop fastener (included), or by simply sliding it into position on top of the Exo Terra Compact Top. This precision instrument 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 with hook & loop fastener (included), or by simply sliding it into position on top of the Exo Terra Compact Top.