Accurately monitor terrarium temperature from -10F to 140F (-23C to 60C) in either Fahrenheit or Celsius at 0.1 degrees with the Zilla Digital Thermometer. The temperature probe is attached to a display unit by a 39" lead wire that can be placed in a convenient spot for monitoring. Choose constant temperature monitoring or turn the unit off and on periodically to save battery power. LR44 battery included. Probe easily attaches with suction cups|Slide Fahrenheit/Celsius selector to display desired reading|Ideal temperature measurement for terrestrail or aquatic habitats|Accurate within /-1. 5?F|LR44, 1. 5v battery is included br/>Sold in Quantity of: 1