Reptizoo Thermo-Hygrometer can display temperature (Celsius/Fahrenheit) and humidity anywhere in the terrarium with external probe. It can be attached to terrarium glass with the included suction cup. The suction cup can be installed in four directions; front, back, left, or right. 

• Transparent LCD screen
• Can be attached to terrarium in four different ways
• Sensor and real-time detection
• Temperature range: -10°C-60°C / 14°F-140°F
• Humidity range: 10-99% RH
• Includes 2 button battery: L1131C