Features:
* indoor & outdoor temperature display， indoor humidity display
*time display
* temperature unit C/F changeable
* memory of MAX/MIN value of  indoor & outdoor temperature


*comfort  level display

Temperature Range:
indoor temperature:  -10C~+50C(+14F~+122F)
outdoor temperature:-50C~+90C(-58F~+194F)
Humidity Range: indoor 10% RH~99% RH
Product Dimension:    82× 70× 20mm
Power-supply: 1.5V (AAA ) x1

For aviation security reasons， this product delivery without battery