Fahrenheit (F) or Celsius (C) conversion, temperature accuracy +/- 1C (+/- 2F), humidity accuracy +/- 5%. This portable hygrometer thermometer can measure indoor humidity and temperature over time, help adjust the settings of humidifier, dehumidifier and humidistat. It is ideal for monitoring family living conditions and health by preventing colds, dry skin, asthma and mold. Humidity measurement range: 10%-99%RH, humidity measurement accuracy: +/- 5%. Fast response, measuring once every 10 seconds, 24 sensitive vents provide updated and accurate readings, measuring temperature from 0.0 to 70.0 over a wide measuring range, measuring humidity from 10% to 90%. The mini round digital humidity thermometer allows you to easily understand the temperature and humidity of the environment. Small and lightweight, can save space and carry. Feature: Simple and stylish appearance, LCD panel, direct plug-in connection, moisture-proof, strong anti-interference Describe: 1. 100% Brand New and High Quality 2. Type: Round Electronic Hygrometer 3. Material: Plastic 4. Dimensions: 45 x 14 mm 5. Color: Black Function: 2. Specification: Measuring range: temperature 0 + 50 ; temperature 10% 99% RH Measurement accuracy: temperature 1; 40% ~ 80% ambient temperature 5% RH Display resolution: temperature 0.1 , humidity 1% RH Power supply: 1.5V 1PCS LR44. Size: Diameter 45.0mm * Thickness 15.5mm Visible area size: diameter 26mm Panel cutout size: diameter 42.0mm Net weight: 15.0g (including 1 battery) 2. It is suitable for the temperature measurement and display needs of various equipment such as refrigerated cabinets and display cabinets. Package includes: 2 X Round Electronic Hygrometer becomeveryrich