The WhitePython® Tri-sense is a 3-channel wireless thermometer and hygrometer. The Tri-sense thermo-hygrometer provides a simple solution for monitoring multiple enclosures or multiple areas in the same enclosure. Includes the Tri-Sense Master unit for monitoring conditions in the room, along with 2 wireless transmitters to monitor your enclosures. Features a maximum and minimum alarm to ensure temperatures and humidity are perfect for your reptile or amphibian. Suitable for all enclosures. Features: • Tri-sense Master unit with large display screen. • Touch sensitive controls. • 2 wireless transmitter units. (2x CR2450 batteries included) • Full instruction manual. • Requires 2x AAA Batteries (Not Included)