This is a water warmer to control the temperature of the water in the PETKIT GENERATION 2 EVERSWEET WATER FOUNTAIN. 
 
FEATURES: 
 
Keeps your pet warm: 
Fast heatable pet water fountain
Warm-up fast and maintain the temperature
Protect your pet sensitive stomach in cold weather
 
Easy to Use: 
Fahrenheit/Celsius LED temperature display
 Auto cut-off when the water level is low