Reliable Accuracy: Room thermometer have measurable temperature range -50 ~ 70 (-58~ 158), indoor temperature measurement accuracy: 1 (1.8), Measurable humidity range: 10% ~ 99% RH, humidity measurement precision: 5% RH. Small and Portable:Thermometer for homes size 4.3*4.3*1.3 cm, its Weight is only 21g, durable and portable enough for saving space and carrying around. Emoji Air Comfort Indicator: Portable temperature monitor with a cute kids Emoji icon indicates air condition: 40%-70% humidity shows happy face; below 40% or higher than 70% humidity shows sad face. Easy to Install:Humidity meter mini can be placed on a table, or attached to the fridge, wall or anywhere you like with the attached tickers. Wide Application: Hygrometer thermometer can be applicable to home, office, car, laboratory, greenhouse, etc. It can be used with humidifiers, heaters, and air conditioners, etc.