Features: There are 2 standard for your option: mini thermometer/digital thermometer with probe. Humidity measuring range: 10%-99%RH, Temperature measuring range: -58°F-158°F. Mini digital electronic thermometer & hygrometer (non-probe)for measuring temperature and humidity for indoor use. The hygrometer thermometer gauge with probe design can provide accurate reading, whcih is proper for incubators, greenhouse,etc. Made of quality material, durable and lightweight, the LCD display screen is easy to read. Specifications: Material: plastics Size: approx 48x28x17mm/2x1x0.7-inch Type: mini thermometer/digital thermometer(optional) A: Two button batteries are required B: 1xAAA battery required Package Includes: 1X Digital Thermometer Hygrometer note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.